Supplier Page from Thermo Fisher Scientific for 3,3'-Diaminobenzidine tetrahydrochloride hydrate, 97%, contains up to 10% water
9-Fluorenone, 99+% from Thermo Fisher Scientific
Epichlorohydrin, 99% from Thermo Fisher Scientific
Ethyl 2-oxocyclohexanecarboxylate, 95% from Thermo Fisher Scientific
Ethyl acetoacetate, 99%, pure from Thermo Fisher Scientific