[EN] METHOD FOR PREPARATION OF 3,7-BIS-(DIMETHYLAMINO)-PHENOTHIAZIN-5-IUM CHLORIDE OR BROMIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE CHLORURE OU BROMURE DE 3,7-BIS-(DIMÉTHYLAMINO)-PHÉNOTHIAZIN-5-IUM
申请人:MIKROCHEM SPOL S R O
公开号:WO2018167185A1
公开(公告)日:2018-09-20
The present invention relates to: a process for preparing 3,7-bis-(dimethylamino)-phenothiazin-5- ium bromide or chloride; a method of converting 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide to 3,7-bis-(dimethylamino)-phenothiazin-5-ium chloride; and the purification of 7-bis- (dimethylamino)-phenothiazin-5-ium chloride by crystallization from aqueous solution of hydrochloric acid, leading to a pharmaceutically acceptable 3,7-bis-(dimethylamino)-phenothiazin- 5-ium chloride (methylthioninium chloride, methylene blue, MTC) of formula I below reported.
METHOD FOR PREPARATION OF 3,7-BIS-(DIMETHYLAMINO)-PHENOTHIAZIN-5-IUM CHLORIDE OR BROMIDE
申请人:MIKROCHEM spol. s.r.o.
公开号:EP3375777A1
公开(公告)日:2018-09-19
The present invention relates to: a process for preparing 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide or chloride; a method of converting 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide to 3,7-bis-(dimethylamino)-phenothiazin-5-ium chloride; and the purification of 7-bis-(dimethylamino)-phenothiazin-5-ium chloride by crystallization from aqueous solution of hydrochloric acid, leading to a pharmaceutically acceptable 3,7-bis-(dimethylamino)-phenothiazin-5-ium chloride (methylthioninium chloride, methylene blue, MTC) of formula I below reported.
本发明涉及一种制备 3,7-双-(二甲基氨基)-吩噻嗪-5-鎓溴化物或氯化物的工艺;一种将 3,7-双-(二甲基氨基)-吩噻嗪-5-鎓溴化物转化为 3,7-双-(二甲基氨基)-吩噻嗪-5-鎓氯化物的方法;以及通过从盐酸水溶液中结晶纯化 7-双(二甲基氨基)-吩噻嗪-5-鎓氯化物,得到下文报告的式 I 的药学上可接受的 3,7-双(二甲基氨基)-吩噻嗪-5-鎓氯化物(甲硫鎓氯化物,亚甲基蓝,MTC)。
Method for preparation of 3,7-bis-(dimethylamino)-phenothiazin-5-ium chloride or bromide
申请人:MIKROCHEM spol, s r.o.
公开号:US11059797B2
公开(公告)日:2021-07-13
The present invention relates to: a process for preparing 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide or chloride; a method of converting 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide to 3,7-bis-(di-methylamino)-phenothiazin-5-ium chloride; and the purification of 7-bis-(di-methylamino)-phenothiazin-5-ium chloride by crystallization from aqueous solution of hydrochloric acid, leading to a pharmaceutically acceptable 3,7-bis-(di-methylamino)-phenothiazin-5-ium chloride (methylthioninium chloride, methylene blue, MTC) of formula I below reported.
本发明涉及一种制备 3,7-双-(二甲基氨基)-吩噻嗪-5-鎓溴化物或氯化物的工艺;一种将 3,7-双-(二甲基氨基)-吩噻嗪-5-鎓溴化物转化为 3,7-双-(二甲基氨基)-吩噻嗪-5-鎓氯化物的方法;以及通过从盐酸水溶液中结晶纯化 7-双(二甲基氨基)-吩噻嗪-5-鎓氯化物,得到药学上可接受的下述式 I 的 3,7-双(二甲基氨基)-吩噻嗪-5-鎓氯化物(甲硫鎓氯化物,亚甲基蓝,MTC)。
Farrington; Warburton, Australian Journal of Chemistry, 1956, vol. 9, p. 480,485
作者:Farrington、Warburton
DOI:——
日期:——
Silberg,I.A. et al., Journal fur praktische Chemie (Leipzig 1954), 1976, vol. 318, p. 353 - 358