Supplier Page from Thermo Fisher Scientific for Silver powder, APS 0.7-1.3 micron, 99.9% (metals basis)
Ergosterol, 98% from Thermo Fisher Scientific
Ethyl 2-mercaptoacetate, 99% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific
Fluorescein, pure from Thermo Fisher Scientific