Imidapril HCl is (-)-(4S)-3-[(2S)-2-[[(1S)-1-ethoxycarbonyl-3-phenylpropyl]amino]-propionyl]-1-methyl-2-oxoimidazolidine-4-carboxylic acid hydrochloride. Molecular Formula: C20H27N3O6·HCl. Molecular Weight: 441.91.
Imidapril HCl occurs as white crystals. It is odorless or has a slight characteristic odor. It is freely soluble in methanol, soluble in water, sparingly soluble in ethanol (99.5), and practically insoluble in ethyl acetate, chloroform, diethyl ether and hexane.