Supplier Page from Thermo Fisher Scientific for 1-[3-(Dimethylamino)propyl]-3-ethylurea, 97%
4-Fluoroaniline, 98% from Thermo Fisher Scientific
9-Fluorenone, 99+% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Ethyl cyanoformate, 99% from Thermo Fisher Scientific