Synonyms: Zinc,bis(5-oxo-L-prolinato)- (8CI); Zinc, bis(5-oxo-L-prolinato-N1,O2)-, (T-4)-;Zinc, bis(5-oxoprolinato)- (7CI); L-Proline, 5-oxo-, zinc complex; L-Proline,5-oxo-, zinc salt (2:1); Proline, 5-oxo-, zinc salt (2:1), L-; ZincL-pyroglutamate; Zinc PCA; Zinc pyroglutamate; Zincidone