Supplier Page from Thermo Fisher Scientific for Calcium carbonate, Puratronic:r, 99.99% (metals basis)
2-Fluorobenzoic acid, 99% from Thermo Fisher Scientific
3-Fluorobenzaldehyde, 98+% from Thermo Fisher Scientific
Ethyl phenylcyanoacetate, 97% from Thermo Fisher Scientific
meso-Erythritol, 99% from Thermo Fisher Scientific