Cyclo(Pro-Pro) tasted bitter.Verpacamides A-D, a sequence of C11N5 diketopiperazines relating cyclo(Pro-Pro) to cyclo(Pro-Arg), from the marine sponge Axinella vaceleti is possible biogenetic precursors of pyrrole-2-aminoimidazole alkaloids.

6708-06-1

C10H14N2O2

194.23

(< 1 mg/ml refers to the product slightly soluble or insoluble )
Powder: -20°C for 3 years
In solvent: -80°C for 2 years