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Anyone know of this or anything similar? by HarryVonFlappinvag - Wed, 25 May 2016 16:41:28 EST ID:9AVsKPcg No.77908 Ignore Report Reply Quick Reply
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Hello,

I hope this is a good place to ask this. I'm curious to know if anyone has heard of a med called Proglumide &/or is there a way to obtain it or create it or something similar. I think this med originally started as a stomach med but had the side effect of reversing people's tolly to opi's. From what I can remember reading yrs ago, this med worked best if taken for 3-4 days than take a 2-3 day break from it. Ofcourse it's not scribed anymore. This could be of such great help to the countless amounts of people who have to take opi's every day to deal w/pain. I guess we can thank the govmt or big pharma for taking something like this off the market, money is more important.
So my questions are this, does anyone know if this med can be obtained anywhere &/or could this med be created? Would it be possible to create something like it?
Aside from all the common potentiators I can't think of anything that would actually reverse a tolly to opi's, except in a round about way, DXM.
Thanks so much for any input any one is able to provide!


Phenethylamine naming by Ernest Blackcocke - Sat, 16 Apr 2016 01:53:53 EST ID:zsw9I8fO No.77844 Ignore Report Reply Quick Reply
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How can it be called phenethylamine when that clearly is a propyl group?
7 posts and 1 images omitted. Click Reply to view.
>>
Betsy Sillybure - Wed, 20 Apr 2016 19:04:47 EST ID:W92KPdIu No.77856 Ignore Report Quick Reply
>>77851
I call bs shulgin lists the dosage of pea as upwards of 1.6g in pikhal.
https://www.erowid.org/library/books_online/pihkal/pihkal142.shtml
>>
press !QUHukXEvkY - Thu, 21 Apr 2016 09:11:06 EST ID:xFG0CGS+ No.77858 Ignore Report Quick Reply
>>77851
oh come on.

did you copy that fantasy out of william gibsons neuromancer?
>The drug hit him like an express train, a white-hot column of light mounting his spine from the region of his prostate, illuminating the sutures of his skull with x-rays of short-circuited sexual energy. His teeth sang in their individual sockets like tuning forks, each one pitch-perfect and clear as ethanol. His bones, beneath the hazy envelope of flesh, were chromed and polished, the joints lubricated with a film of silicone. Sandstorms raged across the scoured floor of his skull, generating waves of high thin static that broke behind his eyes, spheres of purest crystal, expanding...The anger was expanding, relentless, exponential, riding out behind the betaphenethylamine rush like a carrier wave, a seismic fluid, rich and corrosive.

nb
>>
Sidney Cunningway - Mon, 02 May 2016 03:05:04 EST ID:56ToYEXS No.77873 Ignore Report Quick Reply
>>77848

and that is why you stay in school kids
>>
Nathaniel Brooklock - Fri, 20 May 2016 18:58:54 EST ID:j2okwtbe No.77900 Ignore Report Quick Reply
>>77844
It is in some pre work out supplements, which people obviously feel some effect from so I wouldn't say it's dosage is around 1.6kg
>>
press - Wed, 25 May 2016 16:30:23 EST ID:fcMijPsC No.77907 Ignore Report Quick Reply
>>77900
im afraid thats not a very sound reasoning.


LSD - need assistance by Wesley Nickleway - Wed, 27 Apr 2016 00:27:38 EST ID:vl+XBlOj No.77866 Ignore Report Reply Quick Reply
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I'm sorry for bringing this here, I already posted it on /b/ and /psy/ but you guys seem like you know what'll dissolve and what'll be absorbed in the stomach.
I purchased LSD last week that's supposed to be dosed at like 300ug, I am concerned about the substance on it though. I trust the person who got the LSD to me but he might have unintentionally given me something not LSD.

What I wanna know is if I swallow the "LSD tab" if the other chemicals will dissolve if it's not actually LSD. A friend and long time psychonaut told me I had nothing to worry about if I just swallowed it. Help me out?
>>
Caroline Shakeridge - Wed, 27 Apr 2016 16:56:18 EST ID:a7VUUvOY No.77867 Ignore Report Quick Reply
It's likely 100ug or less if it's LSD. This amount will provide a full experience.

nBOMEs can't be absorbed if swallowed as far as I know. Put them in a gel cap or toilet paper and swallow I guess. DOx compounds are active in ranges 20x the dosage of LSD so the tab will be a bit bigger than 1cmx1cm

This belongs in /psy
>>
James Blegglespear - Wed, 27 Apr 2016 20:51:56 EST ID:Dw4RxHgh No.77868 Ignore Report Quick Reply
>>77867
but theres prolly other rc's that can be consumed through tha stomach though
if it's bitter, it's a spitter
if you die, the dealer told a lie
if your tounge gets numb, then you took something dumb
>>
press !QUHukXEvkY - Thu, 28 Apr 2016 01:53:26 EST ID:QpnKQ24z No.77869 Ignore Report Quick Reply
fucking hold it under UV-light at either 254nm or 366nm (i havent tested any other wavelengths)
if the blotter fluoresces it most likely is LSD or a close relative.
25I-NBOMe does not fluoresce under the same conditions.
>>
Phoebe Sibblepat - Mon, 02 May 2016 15:07:58 EST ID:46/eGtv8 No.77876 Ignore Report Quick Reply
>>77866
Buy a regent test kit mango. It won't tell if its LSD but it will tell you if its not at least a lysergemid. Most lysergemids are about a physicslly beign as LSD anyways
Nb belongs on /psy/
>>
Charlotte Shakeham - Sun, 15 May 2016 19:32:45 EST ID:+5AM2MwN No.77890 Ignore Report Quick Reply
Isn't LSD really strong and easily absorbable. If you eat and don't just put it on your tongue won't you get really fucking high?


Future and Drug Safety by Fucking Crollernutch - Tue, 10 May 2016 16:22:29 EST ID:SBkA/DrJ No.77882 Ignore Report Reply Quick Reply
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Is this the right place to ask this sort of thing?
I'm doing some research for a novel, and I have some questions about the future of drugs. My story is set in 2035. E-cigarettes, driverless cars etc are a lot more common, and as such smoking and alcohol related deaths are significantly less common. As such, what drugs will be more dangerous? Less dangerous?
I imagine some labmonkeys make opiates consumable through vaping. I also imagine some entirely new substances are discovered and there's a resurgence of drug paranoia/phobia as people begin to take these new and strange substances.
What do you think?
>>
press !QUHukXEvkY - Tue, 10 May 2016 17:15:39 EST ID:QpnKQ24z No.77883 Ignore Report Quick Reply
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whyd you reckon that alcohol related deathsd be less common? because of automated cars?

truth is i reckon alcohols been a part of human life that long already, might be here to stay. not like theres a ton of tasty drinks with GHB or benzos inem being sold.
folks already got opioids that can be vaporized, fentanyl for example or even opium.

this might not be /lit/ but i guess you should try to read up where we all are right now concerning the topics youd like to examine in your stories and then try to imagine how you reckon theyd unfold. truth is theres a ton of new and sometimes strange substances being sold every year.

personally i got i like to read about new substances and imagine howd their future siblings might look, how and by whom theyd be discovered and whod take a fancy of them. maybe the mcafee/super tan story on bluelight might tingle your liking.
normally i wouldnt call just asking people for their general opinion research.

i reckon a scanner darkly, heart of darkness, infinite jest, something by william gibson, pikhal/tikhal or temple of the golden pavillion might be interesting reads.
>>
Fucking Crollernutch - Tue, 10 May 2016 17:21:04 EST ID:SBkA/DrJ No.77884 Ignore Report Quick Reply
>>77883
>because of automated cars?
Yeah, it'll probably minimize drunk driving. Especially if cars can swerve past pedestrians.
>that reading list
noice
>normally i wouldnt call just asking people for their general opinion research.
Well, not capital-R research, just finding things out.

I already have in the story a family of drugs nicknamed spices; the two that are mentioned are nutmeg and rosemary. The former is a euphoric, the latter is a moderate hallucinogen. I have not quite enough chemistry to propose structures for them.
>>
press !QUHukXEvkY - Tue, 10 May 2016 17:43:02 EST ID:QpnKQ24z No.77885 Ignore Report Quick Reply
>>77884
wouldnt this be a /lit/ thread?

sorry, im a wee bit too tired. nb
>>
Fucking Crollernutch - Tue, 10 May 2016 18:00:51 EST ID:SBkA/DrJ No.77886 Ignore Report Quick Reply
>>77885
I'm asking /chem/ as it's a question about speculating the future of drugs and drug forms. If /lit/ can talk chemistry to me, then sure.
>>
Barnaby Pickbanks - Tue, 10 May 2016 21:31:19 EST ID:X4ILJZsh No.77887 Ignore Report Quick Reply
I guess the better question is, what sort of drugs do you expect to become more commonly used in the future? Why?


Low yield nukes by Angus Neshwell - Fri, 23 May 2014 06:43:15 EST ID:sBVjj75A No.74752 Ignore Report Reply Quick Reply
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>The smallest nuclear weapons actually deployed have had yields around 10 tons (like the W54), and have been intended for short range tactical or nuclear demolition use (e.g. blowing up roads and bridges).

>The absolute minimum possible mass for a bomb is determined by the smallest critical mass that will produce a significant yield. Since the critical mass for alpha-phase plutonium is 10.5 kg, and an additional 20-25% of mass is needed to make a significant explosion, this implies 13 kg or so. A thin beryllium reflector will reduce this, but the necessary high explosive and packaging will add mass, so the true absolute minimum probably lies in the range of 10-15 kg.

>The W54 warhead used in the Davy Crockett had a minimum mass of about 23 kg, and had yields ranging from 10 tons up to 1 kt in various mods (probably achieved by varying the fissile content). The warhead was basically egg-shaped with the minor axis of 27.3 cm and a major axis of 40 cm. The W-54 probably represents a near minimum diameter for a spherical implosion device (the U.S. has conducted tests of a 25.4 cm implosion system however).

http://www.veteranstoday.com/2014/05/22/constructing-the-nuclear-child/comment-page-1/#comment-539600

Low yield mini nukes. And if you're fretting OMG what if these fell in the wrong hands -

they already have. Pic related.
8 posts and 2 images omitted. Click Reply to view.
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Ernest Giffingwill - Tue, 13 Jan 2015 18:43:06 EST ID:mPxNc9mh No.76013 Ignore Report Quick Reply
>>76012
WHy the fuck would you bump a 6 month old thread?
>>
CrazyFolksTribe !loJSOMZg0g - Thu, 29 Jan 2015 19:44:25 EST ID:DHa/QsRX No.76052 Ignore Report Quick Reply
>>76013
Why not?
>>
Lydia Picklock - Thu, 07 Apr 2016 18:15:10 EST ID:IsDQAl0D No.77815 Ignore Report Quick Reply
>>74752

bump
>>
Charlotte Crevingchadge - Tue, 12 Apr 2016 20:32:38 EST ID:G6JxVMCk No.77827 Ignore Report Quick Reply
>>76013

Might be relevant in the coming 7 days.
>>
Isabella Hollerdale - Thu, 05 May 2016 23:48:41 EST ID:Kp36wGEV No.77880 Ignore Report Quick Reply
>>74752

Oprtation Plowshare


Acetone by Shitting Sellerman - Mon, 02 May 2016 12:59:32 EST ID:uYoSzwJB No.77874 Ignore Report Reply Quick Reply
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Are you going to be flagged if you try to buy pure acetone online? I imagine store-bought nail polish remover has some contaminants.
Experiences?
>>
Phoebe Sibblepat - Mon, 02 May 2016 14:59:24 EST ID:46/eGtv8 No.77875 Ignore Report Quick Reply
>>77874
Are you trying to make explosives? If not you could prolly extract acetone from nail polish remover, but I wouldn't know how to do that.
>>
Hugh Clettinggold - Wed, 04 May 2016 12:50:49 EST ID:fh+UlChj No.77877 Ignore Report Quick Reply
Drug store "pure" acetone does have a contaminant, it is bitter flavoring to prevent abuse. As far as I am aware, hardware acetone (sold with paint thinners) is pure enough for most.
>>
press !QUHukXEvkY - Wed, 04 May 2016 13:21:51 EST ID:QpnKQ24z No.77878 Ignore Report Quick Reply
many brands of nail polish removers are ethylethanoate and actually pride themselves in being acetone free around here.

what do you need the acetone for? what purity grade do you need?
and most importantly in what quantities? small orders normally are ignored but if you order a volume above the limit you might draw some attention.
>>
Barnaby Fanshaw - Thu, 05 May 2016 00:04:41 EST ID:zsw9I8fO No.77879 Ignore Report Quick Reply
>>77878
I need it for doing a wash on drugs. It's okay if it's not 100% anhydrous, but it's the bitterants or other nasty stuff I want to ensure isn't in there.

What about acetone off ebay?


Psychadelic Manufacture by Thomas Nickleforth - Sun, 06 Mar 2016 18:22:20 EST ID:njYbfznv No.77712 Ignore Report Reply Quick Reply
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So I've been reading up on manufacturing LSD, and it really doesn't seem that difficult. All over the web you find people who have never made LSD saying it's really difficult, you're going to get yourself killed, etc. The equipment you need doesn't seem difficult to obtain or even expensive. Basic lab glassware & chemicals, pressure cooker for autoclaving, nitrogen, darkroom lights, UV lights, chromatography column & plates. Am I wrong in thinking anyone with some organic chemistry lab experience and fungus cultivation experience should be perfectly able to make LSD?

Yeah some chemicals are closely watched by governments (diethylamine), but from what I've read there's multiple ways to synthesize it, and it shouldn't be too difficult.

Also, why don't we see more pure psilocybin and mescaline? That seems VERY easy to extract. No worrying about decomposition and acquiring/synthesizing watched chemicals. Just get yourself a sox & column?
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Phoebe Pattingdale - Mon, 25 Apr 2016 10:05:04 EST ID:elUaEHQO No.77861 Ignore Report Quick Reply
>>77860
IIRC most acid nowadays is synthesized from blackmarket sourced ET, nobody fucks around with fungus.
>>
Angus Siffingman - Mon, 25 Apr 2016 14:34:14 EST ID:jPu0AOZE No.77862 Ignore Report Quick Reply
>>77788
Wasn't Albert Hoffman's first accidental trip, the "Bicycle Day" trip, from accidentally absorbing a few drops of LSD through his finger tips?
>>
Bombastus !RZEwn1AX62!!xXxJO70U - Tue, 26 Apr 2016 14:37:37 EST ID:b/5qTt5E No.77863 Ignore Report Quick Reply
>>77862
No. Hypodermic LSD is not a thing. Otherwise the dealer I know who handles all his LSD without gloves would be tripping fucking balls every time he dropped it on the papes.
It was hypothesised that he was handling a lot of it (which he was) and ate some finger food without washing his hands and tripped off that.
>>
press !QUHukXEvkY - Tue, 26 Apr 2016 16:41:53 EST ID:QpnKQ24z No.77864 Ignore Report Quick Reply
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>>77862
he wrote a book about his most famous discovery and all his over research into psychedelics. really recommendable, its a light read and not to heavy on the chemistry side.

>>77863
would you say that the guy would be hesitant to admit improper technique? back inna day youd still operate a pipete with your mouth or smoke in the lab
perhaps he doesnt remember, which seems plausible after a huge trip.

im very sorry for being a nuissance and a smartass, but it should be transdermal. hypodermic would imply that it was shoved under the skin instead of passing through it on its own.
isnt touching blotters detrimental to their shelf life? not like you should screw in a different light bulb everytime you handle them but gloves arent that hard to come by.
>>
Vehk !7HYGxe5v5c - Tue, 26 Apr 2016 19:53:53 EST ID:uObvI0JQ No.77865 Ignore Report Quick Reply
>>77864

I've heard a theory that he dosed himself purposefully and lied about it in order to protect his reputation as a research chemist.


Purifying deshcloroketamine by James Bardwill - Sun, 24 Apr 2016 19:23:52 EST ID:oFyUnb48 No.77859 Ignore Report Reply Quick Reply
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So I got 10g of deschloroketamine and it's a bit weak. I'd like to purify it further and I'm wondering what you folks would recommend doing. I'm taking ochem now so I know a little bit but not much about this type of stuff, I know with mxe folks just did an acetone wash and I'm wondering if that would still be a good idea for this, or what. No idea what the impurities would be unfortunately, but I doubt it's cut likely just a shitty synth (got it from china). Thanks


Lab equipment value by Priscilla Chebbersork - Mon, 18 Apr 2016 18:03:17 EST ID:5P3qbCIv No.77852 Ignore Report Reply Quick Reply
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How much would be a reasonable price to ask for a set of reagents and chemistry equipment listed below:
>Round bottom flasks: (one neck) 1000ml, (three neck) 250ml, (two neck) 100ml, (one neck) 50ml
>Flat bottom flasks: (one neck) 1000ml, 250ml, 100ml, 50ml
>Handheld vaccuum/pressure pump
>120mm Buchner funnel with fine glass frit
>Plastic volumetric flasks: 250ml (x10), 100ml (x10), 50ml (x10)
>Hotplate with magnetic stirring, in new condition
>Glass gas washing bottle
>200mm Vigreux condenser colum
>200mm Liebig condenser
>60mm glass petri dishes
>100mm plastic petri dishes (x10)
>2ml glass vials (x20)
>120mm glass mortar and pestle
>150mm glass funnel
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press !QUHukXEvkY - Tue, 19 Apr 2016 12:18:26 EST ID:xFG0CGS+ No.77853 Ignore Report Quick Reply
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what country do you live in?

if you live in germany or austria id recommend selling the glassware on ebay. that normally gets you an okay price, though you might have to bundle up the smaller stuff. you could compose "destillation sets", and sell the bigger flasks seperately.
depending on the brand you could get a hundred quids upwards for the hotplate

as you said, selling the reagents would be too much of a hassle
but if youre in europe id like to know who sold you the Pd/C.
id give you ten bucks for the Pd/C unless its still factory sealed.
>>
Cornelius Pedgewell - Tue, 19 Apr 2016 13:50:28 EST ID:De32qNxz No.77854 Ignore Report Quick Reply
Just look up comparable stuff on ebay, but your most valuable piece is propably the 1l flasks because of hipster appeal and the stirrer.
All the other stuff i have seen for under 50eur
Selling reagents is not worth the trouble, no matter where you are, if its really legal theres no way to make a profit.

Id keep it tho, put it in storage and wait until you can use it again. Anyone who owns such a collection wont give up on the work forever, not for a woman.


Pure Oxycodone Synthesis - My Tek by Bombastus !!HToBa9dh - Sun, 10 May 2015 19:27:27 EST ID:4ppVjZXo No.76494 Ignore Report Reply Quick Reply
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This was my old one. I'll post it up here in case anyone is interested/ can make corrections on it.
If you want clarification on anything, let me know. The hydrogenation (i think) will be the hardest part for any home chemist, let alone kitchen chemist.

The benefit of this synthesis is that it has no toxic chemicals, doesn't use chromate intermediates, and is made from relatively easy to acquire chemicals.
The downsides are that it requires a lot of chemical knowledge, knowledge on desiccant formations, and is much slower than the sodium dichromate method I have seen used (two refluxes that take up 24hours each are used)
Cod - Codeine
Codo - Codeinone
Oxo - Oxycodone

Workup of Aluminium Isopropoxide
In 250two neck RBF, set one neck up for reflux and one neck up for desiccation. Prepare a drying tube with CaCl2 and link it up to the vacuum adapter in the desiccation neck. Heat all the glassware to an ambient temperature of 80deg C upwards towards the allihn condenser. Proceed to blow air through the drying tube into the flask. Seal off the allihn condenser with a small amount of aluminium foil.
Desiccated aluminium dust (27.98g, 1.00mol) is ground to remove oxide layer and HgCl2 (0.01g) was added. The metal semi-amalgam is added to the bottom of the flask and desiccated isopropanol (250ml, 3.30mol) is injected carefully into the vacuum adapter septum. The vessel is left to reflux for 4 hours.
While still on reflux, the allihn condenser is removed and a 3-way adapter with a thermometer adapter is quickly added. The vacuum is attached to the receiver joint of the 3-way with a one neck 250 RBF while stoppering the side arm of the two neck flask tightly. A distillation is run until only solid aluminium dust remains in the still flask.
A yield of 80% of 1mol aluminium isopropoxide (163.4g) should be achieved.
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Archie Habberway - Sun, 03 Apr 2016 13:50:55 EST ID:gY/8T8H5 No.77795 Ignore Report Quick Reply
>>77789
Didn't understand what you meant with using the concentrated HCl though. I prefer sulphuric acid as it is easiest to get reagent grade.
>>
Archie Habberway - Sun, 03 Apr 2016 13:54:25 EST ID:gY/8T8H5 No.77796 Ignore Report Quick Reply
>>77795
Fuck me. Obviously you meant codeine not concentrated. Sorry cannot delete posts I am flooding the thread fuckk.
>>
Ru-lover - Thu, 14 Apr 2016 15:48:37 EST ID:1yz9Gpwk No.77834 Ignore Report Quick Reply
>>76494

New isomerization was tried ! With my favorite element Ruthenium black !

***Codeine extraction***

28x60mg of codeine pills with only lactose as excipient are crushed up and dissolved into 20ml dH2O. After a few hours, the suspension is filtered, the filtrate is stirred with 50ml CH2Cl2 and the aqueous phase is made strongly basic with conc NaOH. The aquesous phase immediatly turned to milky white. The two phase system is stirred for 2h. The organic phases is separated and the aqueous one is extracted with 2x50ml CH2Cl2. The org phases are combined, dried over Na2SO4 and rotavapored. After vaccum the oily residue crystallised to for white crystals. Yield 1.25g of codeine freebase from 1.68 g codeine phosphate.

***isomerisation***

The residue (1.25g codeine freebase) is added into a solution of 2.5 ml H2SO4 2M and 5ml dH2O (H2SO4 0.75 M). The crystals dissolves up on heating to 60-70 °C. 30 mg Ruthenium black is added and the black suspension is refluxed overnight under argon athmosphere. Next day, the ruthenium is filtered on the frit, washed with water and recovered for future use. The slightly yellow filtrate is basified with conc NaOH. The light brown precipitate that immediatly appears is filtered on the frit, washed with dH2O and air dried. The combined filtrate are extracted with 3x50 ml CH2Cl2. After drying and rotavaporing the tan powder are combined and weighed around 1.1g of hydrocodone.

***Notes***
1) Argon athmosphere doesn't seem to be necessairy here, it matters to try without tough.
2) Reaction Time could probably be shorter, TLC is required to determinate the end of the reaction
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Bombastus !RZEwn1AX62!!xXxJO70U - Thu, 14 Apr 2016 21:23:54 EST ID:V1Ngvki3 No.77838 Ignore Report Quick Reply
>>77834
Were your filtrates needles or flakes? Also, why were you fixated on ruthenium once more? i have found that palladium works equally and is easier to locate
sorry if you've already answered. uh

Patents never have precise concentrations. They dont' need to. The papers I've found have used codeine HCl with 0.48M sulfuric acid
In my computer projections, because of the catalytic amount needed, I've used down to 0.5M of sulphuric acid with the same yield. it actually got so fucking stupid that I would weigh out a 5ml graduated cylinder, pour sulphuric acid into it, pour it out, then measure the weight of the residual sulfuric acid. then add 5ml of water and calculate the W/V molar mass of the subsequent liquid.
It's silly.

The only issue is that you have to calculate the codeine <-> sulfuric acid acid:base reaction if you're using freebase.

Why are you using deuterated water again?

When it comes to times, my computer projections have never had a TLC monitoring program because it literally happens incredibly quickly. I've gotten the number down to 90 minutes of refluxing and took it off with two separations (one being caffeine, one being co).
>>
Ru-lover - Fri, 15 Apr 2016 18:31:31 EST ID:1yz9Gpwk No.77843 Ignore Report Quick Reply
>>77838

In the method its some kind of amorphous crystals or rather more flake-like than needles.

Method with palladium was done a long time ago but did not work out well : dark brown color and several unknown spots. I thought the method was not working well (in fact it was probably too concentrated H2SO4 and long reaction time that destroy the compound in that old method) and I was reading plenty of patent about ruthenium catalyst. You already tried successfully with Pd, so I decided to post the method of ruthenium ;)

In the method dH2O means distilled water, not deuterated.

Ruthenium seems here to be more active than Pd, you need less Ru per g of cod. Did you try other computer projections with a smaller Pd/cod ratio ?

Do you have the solvent infos and TLC rf of cod and HC ?

Do you think the reaction work by skipping the pill extraction, just by dissolving the pills with excipients in H2SO4 and refluxing with Pd or Ru ?

By the way, as you post a method about oppenhauer oxidation of cod I'd like to point out I was reading a patent and I found an interesting oppenhauer oxidation of DHC to cod at ambian temperature with tBuOK/benzophenone in cyclohexane here :
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Coefficient of drag of runners and cyclists by Polly Gippernere - Thu, 14 Apr 2016 12:27:35 EST ID:DtZ5lIsF No.77833 Ignore Report Reply Quick Reply
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At what speed (MPH or KPH) does aerodynamic drag become a factor for various items?

I know that for automobiles drag becomes a factor when you're in the 30-40mph ballpark, but what about bicyclists or runners? It's easier to determine the coefficient of drag of, say, an airplane or a car because they're (more or less) static objects, but a cyclist moves their legs and a runner moves their legs and arms.

I'm wondering about this because when I'm on a stationary bike, I'm able to pedal faster with more power when I'm in the typical forward fold versus when I'm pedaling upright-- aerodynamic forces are pretty well negated in this case. The same thing goes for running-- if I'm jogging upright on a treadmill versus leaning forward, I produce more power and speed when I'm leaning forward because my center of gravity has shifted-- but does leaning forward provide any specific aerodynamic benefit for anyone who isn't running as fast as Usain Bolt?
>>
Nell Hagglestat - Sun, 17 Apr 2016 15:28:41 EST ID:6SGTYI6Z No.77850 Ignore Report Quick Reply
Sounds like a difficult question to answer, but if you're running on a treadmill then do aerodynamics even matter? It seems like they wouldn't compared to normal running.


The Manhatton project is why the Pryamids are really real by Hugh Penningforth - Sat, 06 Feb 2016 22:12:47 EST ID:NPo+K9eR No.77626 Ignore Report Reply Quick Reply
File: 1454814767570.jpg -(119457B / 116.66KB, 736x652) Thumbnail displayed, click image for full size. 119457
If the whole society of America came together to create the A-Bomb and that was an endeavor of a whole society , what evidence of the same thing could be used to disprove that aliens built the Pyramids?
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Betsy Dodgepeck - Mon, 08 Feb 2016 21:45:59 EST ID:YhREOUdy No.77638 Ignore Report Quick Reply
>>77628
>if they had to place blocks in a serial fashion, just one at a time

Well good thing they had enough manpower (thousands upon thousands of slaves) to place a bunch of blocks at a time, then!
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press !QUHukXEvkY - Tue, 09 Feb 2016 12:42:23 EST ID:MD/oThse No.77643 Ignore Report Quick Reply
>>77628
youre not much of a teamplayer, are you?
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Sidney Fanworth - Fri, 12 Feb 2016 03:54:29 EST ID:X6HIP3d/ No.77651 Ignore Report Quick Reply
>>77638
Mathematically you can only place one block of a pyramid at a time
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Nigger Mucklepune - Sat, 13 Feb 2016 06:21:15 EST ID:+DZfgoAX No.77655 Ignore Report Quick Reply
>>77651
There's a load of blocks on each layer so you'd be able to work from several different angles bring blocks in. You wouldn't even need to be placing adjacent blocks if you planned it right/on the higher levels. Of course as you go up and it gets narrower this slows down. But most of the blocks will be on the lower levels. You might be placing several remote blocks and joining them up for example. What am I missing?
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Isabella Drundletetch - Mon, 11 Apr 2016 23:32:55 EST ID:VJYm4aCY No.77824 Ignore Report Quick Reply
>>77638
YOU speak on many levels.


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