Demethyl irbesartan is a key metabolite of irbesartan, an angiotensin II receptor blocker used in the treatment of hypertension. It contributes to the overall antihypertensive effect by helping to lower blood pressure through receptor blockade. In pharmaceutical research and development, it is utilized to study the metabolism of irbesartan, assess drug efficacy and safety in the bloodstream, and understand drug elimination and pharmacological actions in the body. It is particularly relevant for evaluating therapies for high blood pressure.