S-[3-(2,5,6-Trimethyl)bimanyl] Captopril (Proline 2,5,5-d3) is deuterium labeledS-[3-(2,5,6-Trimethyl)bimanyl] Captopril (T796265). S-[3-(2,5,6-Trimethyl)bimanyl] Captoprilis a related compound of Captopril (C175750), which is a competitive inhibitor ofangiotensin-converting enzyme (ACE) that convertsangiotensin I (AT I) to angiotensin II (AT II).Captopril can be used to treathypertension.