Supplier Page from Thermo Fisher Scientific for L-Cysteine hydrochloride monohydrate, 98.5-101.5% (dry basis), Thermo Scientific
2-Ethoxyethyl ether, 98+%, extra pure from Thermo Fisher Scientific
Estrone, 99+% from Thermo Fisher Scientific
Ethyl (ethoxymethylene)cyanoacetate, 98% from Thermo Fisher Scientific
Fluoranthene, 98% from Thermo Fisher Scientific