Olmesartan methyl ester（Cat No.:R018503）is a synthetic precursor and prodrug derivative of olmesartan, an angiotensin II receptor blocker (ARB) widely studied for its role in regulating blood pressure and vascular function. As an esterified form, it serves as a key intermediate in medicinal chemistry for exploring prodrug strategies, improved pharmacokinetics, and structure–activity relationships. Researchers employ olmesartan methyl ester in cardiovascular and metabolic disease studies to investigate renin–angiotensin system modulation, hypertension models, and novel therapeutic designs. Its stability and versatility make it valuable in drug discovery and preclinical development.