Valsartan is a nonpeptide and specific angiotensin II antagonist acting on the AT1 receptor subtype.

Valsartan is chemically described as N-(1-oxopentyl)-N-[[2¢-(1H-tetrazol-5-yl)[1,1¢-biphenyl]-4-yl]methyl]-L-valine. Its empirical formula is C24H29N5O3, and its molecular weight is 435.5.
Valsartan is a white to practically white fine powder. It is soluble in ethanol and methanol and slightly soluble in water.