Ethyl 2-(((Trifluoromethyl)sulfonyl)oxy)pentanoate is an intermediate for the synthesis of (R)-N-(1-Carboxyethyl)-D-norvaline 1-Ethyl Ester (C178075), which is an intermediate in the synthesis of Perindoprilat (P287530), an angiotensin-converting enzyme (ACE) inhibitor. Antihypertensive.