... :99% 5.M.F.:C6H9NO3S 3-Acetylthiazolidine-4-Carboxylic acid,Folcisteine,NATCA is white crystalline powder,slightly acid odor,soluble in organic solvent ... ,such as ethanol.Name:3-Acetylthiazolidine-4-Carboxylic acid,Folcisteine,NATCASynonym:N-Acetyl-L-Thioproline / N-Acetyl-Thiazolidine ...