日本长野县户隐地方所产藜芦属植物小梅蕙草Veratrum staminium Maxim.,现用作农业杀虫剂。作者等按前报相似的方法,分离出含有效成分的非晶形粗盐基,溶于丙醇放置数日而得盐基A,或以层析法分离精制亦可得盐基A。由丙酮滤液再经层析分离并得其他盐基B; The Veratrum staminium Maxim., a plant of the genus Viola, which is produced in the Hidori area of ​​Nagano Prefecture, Japan, is used as an agricultural pesticide. The authors reported a method similar to the previous method to separate the amorphous crude salt base containing the active ingredient, dissolved in propanol for several days to obtain the salt base A, or purified by chromatography to obtain the salt base A. From acetone filtrate and then separated by chromatography and other base B;