<chemical> 3,3'-(perhydro-1,4-diazepin-1,4-diyl)-bis(propyl-3,4,5-trimethoxybenzoate). Coronary vasodilator with some antiarrhythmic activity. ... Pharmacological action: vasodilator agents. ... Chemical name: Benzoic acid, 3,4,5-trimethoxy-, (tetrahydro-1H-1,4-diazepine-1,4(5H)-diyl)di-3,1-propanediyl ester ... (12 Dec 1998) ...