I'm unsure of the synthetic route used as I wasn't the chemist...although, I guess that would be relevant information.
The temperature range of storage was in the range of ordinary refrigeratures (not freezers), exact temperature unknown.
The appearance of the salt is a fine powder of tan color. The visual appearance of the material did not seem to change as the degredation occured.
The activity drop was determined by multiple people's experiences taking the substance orally shortly after synthesis and then again more than a week later. Initially a dose of 15-20mg produced full experiences; later results of 35mg, 60mg, and 115mg, produced no pronounced effects, only a mild tryptamine feel flowing through the body.
(note: all above information was relayed to me by a third-party who resides in a free land where all such activities are legal)