英文别名(4S,7S,13S)-13-[[(2S)-2-amino-3-(4-hydroxyphenyl)propanoyl]amino]-7-[(4-chlorophenyl)methyl]-3,3,14,14-tetramethyl-6,9,12-trioxo-1,2-dithia-5,8,11-triazacyclotetradecane-4-carboxylic acid; (4S,7S,13S)-7-(4-Chlorobenzyl)-3,3,14,14-tetramethyl-6,9,12-trioxo-13-(L-tyrosylamino)-1,2-dithia-5,8,11-triazacyclotetradecane-4-carboxylic acid; [D-Pen2,4'-Cl-Phe4,D-Pen5]enkephalin; cyclic[D-Pen2,4'-ClPhe4,D-Pen5]enkephalin; cyclo[D-Pen2-4'-Cl-Phe4,D-Pen5]enkephalin; Dpdp(Cl)E; [pCl-Phe4]-DPDPE; Enkephalin,pen(2,5)-4-chloro-phe(4); [D-Pen2,p-Cl-Phe4,D-Pen5]enkephalin; Pcl-dpdpe; Enkephalin, pen(2,5)-4-chloro-phe(4)-; 2,5-Pen-4-(4-chloro-phe)-enkephalin; (D-Pen(2)-pcl-phe(4)-D-pen(5))enkephalin; Enkephalin, D-pen(2), D-pen(5), p-Cl-phe(4); 2,5-Penicillamine-4-(4-chlorophenylalanine)-enkephalin; Enkephalin, penicillamine(2,5)-4-chlorophenylalanine(4)-; (D-Pen2,5, pCl-Phe4)enkephalin; (D-Pen 2,p-chloro-Phe4,D-Pen 5)-Enkephalin; Tyr-D-Pen-Gly-pCl-Phe-D-Pen (Disulfide bridge D-Pen2-D-Pen5) 
