Supplier Page from Thermo Fisher Scientific for N,N'-Diphenylbenzidine, 97%
18-beta-Glycyrrhetinic acid, 98+% from Thermo Fisher Scientific
5-Hydroxyindole-3-acetic acid, 99% from Thermo Fisher Scientific
Ethyl cyanoformate, 99% from Thermo Fisher Scientific
Mineral oil, for spectroscopy, suitable for nujol mull preparations for IR-spect from Thermo Fisher Scientific