Supplier Page from Thermo Fisher Scientific for (S)-N-3-Cyanophenylalanine, 95%, 98% ee
D-Cystine, 98% from Thermo Fisher Scientific
Hydroquinone, 99% from Thermo Fisher Scientific
Melatonine, 99% from Thermo Fisher Scientific
Methyl 5-bromovalerate, 97% from Thermo Fisher Scientific