| 摘要 |
Novel crystalline 4,4'-bis[(4-anilino-6-morpholino-1,3,5-triazin-2-yl)-amino]-stilbene-2 ,2'-disulfonic acid is provided by a procedure involving treating cyanuric chloride with 4,4'-diaminostilbene-2,2'-disulfonic acid, reacting the product thus obtained, without isolation, with aniline followed by reacting the resulting product, without isolation, with morpholine and precipitating the product thus obtained by treatment with an acid. |
