12-12-02 06:20
No 388646
I am curious if there is a shelf life for this substance.
I have some considerably old Sandoz 1ml glass vials kicking around.
Thanks!
Understanding I know much less everyday.
(Chief Bee)
12-12-02 06:33
No 388652
Yes, there is a shelf life as ET is decomposed by the usual culprits - heat, moisture and/or UV light. The exact time is hard to estimate as it depends wildly on how the samples were stored. A quick TLC analysis should reveal how fresh it is. If it has been stored in sealed vials the majority is likely still intact.
(Hive Bee)
12-14-02 11:05
No 389393
What is the concentration? One mg per ml? I doubt that the total amount is more than a few mg.
(Stranger)
01-12-03 22:47
No 397626
It takes a large amount of Ergotamine to make a quantity of lysergic acid. 10 grams to make 1/2 gram something like that
(Hive Bee)
01-14-03 18:14
No 398117
you can get about 30-35% yield of LA from Ergotamine.
(Chief Bee)
01-14-03 19:43
No 398145
It's very possible to get much better yields than that, here is a report of 75% yield (starting with ergocristine, another ergotamine): ../rhodium /ergocri
Also, the procedure in Tihkal gives high yields.
05-25-03 01:22
(Rated as: ALL CAPS)
(Chief Bee)
05-25-03 01:56
No 435276
You didn't give a complete reference, nor did you remember to let go of the shift key when typing.
Why do you feel it is important to use the freebase and not use the tartrate directly, as the basic conditions would release the freebase in situ anyway? Do you see any special reason potassium tartrate cannot be present in the solution while hydrolyzing?