Supplier Page from Thermo Fisher Scientific for Copper powder, -625 mesh, APS 0.50-1.5 micron, 99% (metals basis)
Estrone, 99+% from Thermo Fisher Scientific
Ethyl butyrate, 99% from Thermo Fisher Scientific
Ethyl chloroformate, 99% from Thermo Fisher Scientific
N-Ethylaniline, 98% from Thermo Fisher Scientific