1-(1-(N-(3-Amino-2-hydroxy-1-oxo-4-phenylbutyl)leucyl)prolyl)proline 123652-87-9 L-Proline, 1-(1-(N-(3-amino-2-hydroxy-1-oxo-4-phenylbutyl)-L-leucyl)-L-prolyl)-, (S-(R*,S*))- Probestin Proline, 1-(1-(N-(3-amino-2-hydroxy-1-oxo-4-phenylbutyl)leucyl)prolyl)-