摘要 |
This disclosure describes new compounds and compositions of matter useful as anti-asthmatic agents and the method of meliorating asthma in mammals therewith, the novel active ingredients of said compositions of matter being certain 1-substituted-6-n-propyl-8-methylimidazo [1,5-d]-as-triazin-4(3H)-ones and/or the pharmacologically acceptable acid-addition salts thereof. |