2-?(2-?Hydroxyphenyl)?-?4,?5-?dihydro-?1,?3-?thiazole-?4-?carboxylic Acid is an intermediate in synthesizing Pyochelin I and Pyochelin II (P840365). They are two major siderophores produced and secreted by Pseudomonas aeruginosa PAO1 to assimilate iron. It also has triphenyltin (T809350) decomposition capacity.