5,11-Dihydro-11-[(4-methyl-1-piperazinyl)acetyl]-6H-pyrido[2,3-b][1,4]benzodiazepin-6-one dihydrochloride; Duogastral,11-(2-(4-methylpiperazin-1-yl)acetyl)-5H-benzo[e]pyrido[3,2-b][1,4]diazepin-6(11H)-one dihydrochloride,An antiulcerative. Tricyclic gastric-acid inhibitor.,Pirenzepine Therapeutic