Supplier Page from Thermo Fisher Scientific for Hydrazine hydrate, 55% (Hydrazine, 35%)
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
Ethyl 4-dimethylaminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl cyanoformate, 99% from Thermo Fisher Scientific
Ethyltriphenylphosphonium bromide, 98% from Thermo Fisher Scientific