captopril Alias: CAS NO.: 62571-86-2 M.F.: C9H15NO3S M.W.: 217.28 Assay: 99% Appearance: Package:25kg/fibre drum Specification: BP2007/USP31 Usage: Captopril is an angiotensin-converting enzyme inhibitor (ACE inhibitor) used for the treatment of hypertension and some types of congestive heart failure.