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How to tell the difference between racemic K and S-isomer

  • Thread starter Thread starter Toomanytimes
  • Start date Start date
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Toomanytimes

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Got a problem, have S isomer and Racemic apparently, but they look exactly the same, little sugar/salt like crystals (some even look like when u crush up epsom salts, but theyre white not clear, ..both batches same taste etc.. Will any reagents show racemic and S isomer differences as I don't feel like K holing at the moment as I need around half a gram to acheive this by snorting.
 
No you can not easily test for the stereochemistry with reagents.
You might be able to separate out one/both of the stereoisomers with optically active tartaric acid(s), but this is not OTC stuff.
Short of testing your Ketamine with polarised light (to see it's optical activity) with a CD (circular dichroism) spectrometer et cetera, there is no easy way to tell them apart.
 
simple solution :
throw the baggies together ,
now you will have double racemic mix...with some extra s-molecules.

your ex.
 
ex-amine said:
simple solution :
throw the baggies together ,
now you will have double racemic mix...with some extra s-molecules.

your ex.
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Not the worst idea! You can calculate easily the ratio R/S and then take the appropriate amount.

PurpleFriday said:
Its def s-K.

Any reason why s-K makes your skin feel very uncomfortable in a way of dehydration. Its hard to explain but it feels like rubber skin after snorting it and coming down. And like something excretes out of the skin.
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Why? From where did you take this info? Senseless post IMO...

Peace! Murphy
 
How can you be sure that you both have samples from the same batch?!
Rhetorical question...
 
Short of testing your Ketamine with polarised light (to see it's optical activity) with a CD (circular dichroism) spectrometer et cetera, there is no easy way to tell them apart.
Click to expand...

This isn't really that difficult though.
 
Yup, in fact it's easy, you just need the equipment, which isn't really a common thing to have at home, he he. If you did though it'd be very useful!
 
I suppose there is no reason why you can't make a polarometer with two photographic polarising lens filters?
 
^ yeah, that should work. I bought one from the university while they were selling old crap one fine afternoon (along with a computer that I dropped on the way home). Never used it though.
 
lol you guys are too complex :D

just snort a little bit of both. The racemic will have quite a bit longer physical effects, the high will turn a bit dirtier/more sedative like near the tail end. The pure S isomer will be much cleaner on the body, less of a warm blanket feel to it, and once the high is over it will be much more transparent on the body.

peace :D
 
^

Obviously, but if you dont have the right equipment, and youre sure that both batches are safe, then theres no harm in just sampling a bit from both at different times to determine which is which.
 
A Simple Polarimeter and Experiments Utilizing an Overhead Projector.
by Dorn, H. C.; And Others
Source: Journal of Chemical Education, v61 n12 p1106-07 Dec 1984
 
Frozanics said:
^

Obviously, but if you dont have the right equipment, and youre sure that both batches are safe, then theres no harm in just sampling a bit from both at different times to determine which is which.
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At best you have a good idea, in all likelihood, you've got less than a 60% chance of getting it right. Vague notions of something feeling warmer or more empathogenic mean little under the influence of a powerful dissociative.

Why not take two hours and either find or make what you need? It's simple and cheap.
 
MattPsy said:
Yup, in fact it's easy, you just need the equipment, which isn't really a common thing to have at home, he he. If you did though it'd be very useful!
Click to expand...

Just use the polarized lenses from a pair of sunglasses. The S-isomer will have a different extinction point to the racaemic soln. No need for expensive equipmant unless you want to measure the degree of rotation...
 
Ham-milton said:
At best you have a good idea, in all likelihood, you've got less than a 60% chance of getting it right. Vague notions of something feeling warmer or more empathogenic mean little under the influence of a powerful dissociative.

Why not take two hours and either find or make what you need? It's simple and cheap.
Click to expand...
well, have you taken both S isomer and racemic ketamine? They are pretty markedly different, and I am surprised that you think one would have only a 60% chance of being able to know, had you taken both on separate occassions yourself.

I am positive I could tell you with greater accuracy than that which is which. Its very noticeable like I said during the tail end.

But, I understand the neatness factor of talking about other ways...just thought I'd throw out the 'practical' solution to ya'll :D

don't want to derail this thread, carry on!
 
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