Supplier Page from Thermo Fisher Scientific for Xanthine monosodium salt monohydrate, 96+% (dry basis), Thermo Scientific
3-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
Ethyl carbazate, 97% from Thermo Fisher Scientific
Ethyl cyanoformate, 99% from Thermo Fisher Scientific
Ethyl isonipecotate, 98+% from Thermo Fisher Scientific