Supplier Page from Thermo Fisher Scientific for Hydrazine hydrate, 55% (Hydrazine, 35%)
4-Ethylphenol, 97% from Thermo Fisher Scientific
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethanethiol, 99+% from Thermo Fisher Scientific
Ethyl 3-aminocrotonate, 98.5% from Thermo Fisher Scientific