Methyl 2-[(4R)-4,5-Dihydro-2-(2-hydroxyphenyl)-4-thiazolyl]-3-methyl-4-Thiazolidinecarboxylic Acid Ester Mixture is an intermediate used in the synthesis of Pyochelin I and Pyochelin II (P840365), which are the two major siderophores produced and secreted by Pseudomonas aeruginosa PAO1 to assimilate iron. It also has triphenyltin (T809350) decomposition capacity.