Supplier Page from Thermo Fisher Scientific for D-Sorbitol, 97%
2-Ethyl-1,3-hexanediol, 99%, mixture of isomers from Thermo Fisher Scientific
2-Mercaptobenzothiazole, 95% from Thermo Fisher Scientific
Methyl chloroformate, 99% from Thermo Fisher Scientific
trans-4-Hydroxy-L-proline, 99+% from Thermo Fisher Scientific