Supplier Page from Thermo Fisher Scientific for Bis(tri-n-butyltin) oxide, 97%
2-Ethyl-1,3-hexanediol, 99%, mixture of isomers from Thermo Fisher Scientific
D-Cystine, 98% from Thermo Fisher Scientific
D-Sorbitol, 97% from Thermo Fisher Scientific
Sulfur trioxide pyridine complex, technical, 48-50% active SO3 from Thermo Fisher Scientific