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從紫草烏(Aconitum delavayi French)中發現含有植物鹼成分0.58％,其中結晶的植物鹼,佔有0.43％。此結晶的植物鹼,暫時命名為紫草烏鹼,其分子式已定為C_(28) H_(39)O_(5)N·H_(2)O,熔點59-64°,[α]_D～(17)=-9.56°。現已製成下列四種結晶鹽:(一)硝酸鹽,熔點154°;(二)高氯酸鹽,熔點241°;(三)苦酮酸鹽,熔點218°;(四)氯金酸鹽,熔點215°。紫草烏鹼的止痛作用比嗎啡為弱,但較漢防乙甲素為強。
Aconitum delavayi French was found to contain 0.58% plant alkaloids, of which crystallized plant alkaloids accounted for 0.43%. This crystalline plant base, tentatively designated as physourine, has a molecular formula of C 28 H 39 O. 5 N N H 2 O, melting point 59-64°, [α]_D (17)=-9.56°. The following four crystalline salts have been produced: (i) Nitrate, melting point 154°; (ii) Perchlorate, melting point 241°; (iii) Pheroate, melting point 218°; (iv) Chloroauric acid Salt, melting point 215°. The analgesic effect of iverxarine is weaker than that of morphine, but it is stronger than that of acetylcholine.