Supplier Page from Thermo Fisher Scientific for Folinic acid, calcium salt pentahydrate, 95.0-105.0%
4-Fluorobenzenesulfonyl chloride, 98% from Thermo Fisher Scientific
Ethyl carbazate, 97% from Thermo Fisher Scientific
Ethylenediaminetetraacetic acid, tetrasodium salt hydrate, 98%, pure from Thermo Fisher Scientific
N-Ethylaniline, 98% from Thermo Fisher Scientific