Supplier Page from Thermo Fisher Scientific for Dihydrogen hexachloroplatinate(IV) hexahydrate, low nitrate, Premion:r, 99.95% (metals basis), Pt 37.5% min
1-Ethynyl-1-cyclohexanol, 99+% from Thermo Fisher Scientific
Ethyl 4-chlorobutyrate, 97% from Thermo Fisher Scientific
Ethyl 4-dimethylaminobenzoate, 99+% from Thermo Fisher Scientific
Ethyl cyanoacetate, 98+% from Thermo Fisher Scientific