The Vespiary

The Hive => Tryptamine Chemistry => Topic started by: Drummer on December 12, 2002, 06:20:00 AM

Title: Ergotamine Tartrate
Post by: Drummer on December 12, 2002, 06:20:00 AM
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.
Title: shelf
Post by: Rhodium on December 12, 2002, 06:33:00 AM
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.
Title: Concentration ?
Post by: Nemo_Tenetur on December 14, 2002, 11:05:00 AM
What is the concentration? One mg per ml? I doubt that the total amount is more than a few mg.
Title: lots of e.t. needed
Post by: bbell on January 12, 2003, 10:47:00 PM
It takes a large amount of Ergotamine to make a quantity of lysergic acid. 10 grams to make 1/2 gram something like that
Title: Actually, if one is careful
Post by: Bubbleplate on January 14, 2003, 06:14:00 PM
you can get about 30-35% yield of LA from Ergotamine.
Title: Yields
Post by: Rhodium on January 14, 2003, 07:43:00 PM
It's very possible to get much better yields than that, here is a report of 75% yield (starting with ergocristine, another ergotamine):

https://www.thevespiary.org/rhodium/Rhodium/chemistry/ergocristine.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/ergocristine.html)



Also, the procedure in Tihkal gives high yields.
Title: REMOVE THE SALT
Post by: bbell on May 25, 2003, 01:22:00 AM
Title: Why freebase and not the tartrate?
Post by: Rhodium on May 25, 2003, 01:56:00 AM
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?