This invention provides an isolated compound having the structure:
or a salt thereof.
The invention also provides for a process for preparing 4-(3-(methylsulfonyl)phenyl)-1-propylpiperidin-4-ol, 1-(3,3-bis(3-(methylsulfonyl)phenyl)propyl)-4-(3-(methylsulfonyl) phenyl)piperidone, 1,4-bis((3-(1-propylpiperidin-4-yl)phenyl)sulfonyl)butane, (3R,4S)-4-(3-(methylsulfonyl)phenyl)-1-propylpiperidin-3-ol, 4-(3-(methylsulfonyl)phenyl)-1-propylpiperidine 1-oxide, 1-(2-methylpentyl)-4-(3-(methylsulfonyl)phenyl)piperidine, 4-(3-(methylsulfinyl)phenyl)-1-propyl-1,2,3,6-tetrahydropyridne, and 4-(3-(methylsulfonyl)phenyl)-1-propyl-1,2,3,6-tetrahydropyridine.
This invention also provides an impurity or a salt thereof for use, as a reference standard to detect trace amounts of the impurity in a pharmaceutical composition comprising pridopidine or a pharmaceutically acceptable salt thereof. This invention further provides a process for producing a pridopidine drug product comprising obtaining a pridopidine drug substance and mixing the pridopidine drug substance with suitable excipients so as to produce the pridopidine drug product. This invention also provides a process for producing a pridopidine drug product. This invention also provides a process of distributing a pridopidine drug product.
本发明提供了一种具有以下结构的分离化合物:
或其盐类。
本发明还提供了一种制备 4-(3-(甲磺酰基)苯基)-
1-丙基哌啶-4-醇、1-(3,3-双(3-(甲磺酰基)苯基)丙基)-4-(3-(甲磺酰基)苯基)
哌啶酮、1,4-双((3-(
1-丙基哌啶-4-基)苯基)磺酰基)
丁烷、(3R、4-(3-(甲磺酰基)苯基)-
1-丙基哌啶-3-醇,4-(3-(甲磺酰基)苯基)-
1-丙基哌啶 1-氧化物,1-(2-甲基戊基)-4-(3-(甲磺酰基)苯基)
哌啶、4-(3-(甲磺酰基)苯基)-1-丙基-
1,2,3,6-四氢吡啶,以及 4-(3-(甲磺酰基)苯基)-1-丙基-
1,2,3,6-四氢吡啶。
本发明还提供了一种杂质或其盐,用作检测包含普利多
哌啶或其药学上可接受的盐的药物组合物中痕量杂质的参考标准。本发明进一步提供了一种生产普利多
哌啶药物产品的工艺,包括获得普利多
哌啶药物物质并将普利多
哌啶药物物质与合适的赋形剂混合以生产普利多
哌啶药物产品。本发明还提供了一种生产普利多匹定药物产品的工艺。本发明还提供了一种分配普利多匹定药物产品的工艺。