(4S)-1-((S)-3-Mercapto-2-methylpropionyl)-4-(phenylthio)-L-proline, compound with L-arginine (1:1) 81872-09-5 L-Proline, 1-(3-mercapto-2-methyl-1-oxopropyl)-4-(phenylthio)-, (1(R*),2alpha,4alpha)-, compd. with L-arginine (1:1) SQ 26703 Zofenoprilat arginine [USAN]