Supplier Page from Thermo Fisher Scientific for Copper(II) methoxide, typically 98% (metals basis)
3-Iodo-L-tyrosine, 97% from Thermo Fisher Scientific
Allopurinol, 98% from Thermo Fisher Scientific
Ethylene carbonate, 99+% from Thermo Fisher Scientific
Isonipecotic acid, 99% from Thermo Fisher Scientific