Valsartan (CGP 48933) methyl ester (Standard) is the analytical standard of Valsartan methyl ester (HY-W414915). This product is intended for research and analytical applications. Valsartan methyl ester is the methyl ester derivative of Valsartan (HY-18204). Valsartan is a selective angiotensin II type 1 (AT1) receptor blocker (ARB) with potent antihypertensive and cardioprotective effects. Valsartan competitively binds to AT1 receptors, inhibiting the binding of angiotensin II to AT1 receptors, thereby blocking angiotensin II-mediated vasoconstriction, sodium retention, and myocardial hypertrophy signaling pathways. Valsartan reduces systolic blood pressure in L-NAME-induced hypertensive rats. Valsartan can be used for the study and treatment of arterial hypertension, hypertensive heart disease, and heart failure[1].