2-Thr-5-thz-3-glynh2-enkephalin 2-Threonyl-5-(4-thiazolidinecarboxylic acid) enkephalinamide 64889-80-1 Enk-ttg Enkephalin, thr(2)-thz(5)-glynh2(3)- Enkephalin, threonyl(2)-thiazolidinyl(5)-glycinamide(3)- Enkephalinamide, 2-threonyl-5-(4-thiazolidinecarboxylic acid) Enkephalinamide, thr(2)-4-thiazolidinecarboxylic acid(5) Glycinamide, L-tyrosyl-D-threonyl-N-(2-(4-(aminocarbonyl)-3-thiazolidinyl)-2-oxo-1-(phenylmethyl)ethyl)-, (R-(R*,S*))- Thr(2)-thz(5)-enkephalinamide