(4S)-4-Cyclohexyl-1-[[hydroxy(4-phenylbutyl)phosphinyl]acetyl]-L-Proline PhenylMethyl Ester

(4S)-4-Cyclohexyl-1-[[hydroxy(4-phenylbutyl)phosphinyl]acetyl]-L-Proline Phenylmethyl Ester is used as a reactant in the synthesis of Fosinopril Sodium Salt (F727800), a phosphinic acid containing angiotensin converting enzyme (ACE) inhibitor. Antihypertensive.