Supplier Page from Thermo Fisher Scientific for Silver powder, crystalline, -10+20 mesh, Premion:r, 99.99% (metals basis)
Ethyl 4-dimethylaminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific
Ethyl phenylcyanoacetate, 97% from Thermo Fisher Scientific
Ethyl propiolate, 99% from Thermo Fisher Scientific