(S)-2,5-Dihydro-1H-pyrrole-2-carboxylic acid 1H-Pyrrole-2-carboxylic acid, 2,5-dihydro-, (S)- 3,4-Dehydro-L-proline 3-Pyrroline-2-carboxylic acid, L- (8CI) 4043-88-3 BRN 5376764 EINECS 223-738-7 L-3,4-Dehydroproline L-3-Pyrroline-2-carboxylic acid