Supplier Page from Thermo Fisher Scientific for Diethylaminosulfur trifluoride, 95%
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific
Methyl 5-bromovalerate, 97% from Thermo Fisher Scientific
Phenylselenol, 98% from Thermo Fisher Scientific
Riboflavin, 98% from Thermo Fisher Scientific