Impurities

RISPERIDONE Impurities

  • RISPERIDONE - 9-keto risperidone

  • Impurity: RISPERIDONE - 9-keto risperidone
  • Chemical Name: 3-(2-(4-(6-fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-7,8-dihydro-2-methyl-6H-pyrido[1,2-a]pyrimidine-4,9-dione
  • RISPERIDONE - EP Impurity A

  • Impurity: RISPERIDONE - EP Impurity A
  • Chemical Name: 3[2[4[(E)(2,4difluorophenyl)(hydroxyimino)methyl]piperidin-1-yl]ethyl]-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
  • RISPERIDONE-EP Impurity B

  • Impurity: RISPERIDONE-EP Impurity B
  • Chemical Name: 3[2[4[(Z)(2,4difluorophenyl)(hydroxyimino)methyl]piperidin-1-yl]ethyl]-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
  • RISPERIDONE - EP Impurity C

  • Impurity: RISPERIDONE - EP Impurity C
  • Chemical Name: (9RS)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl]ethyl]-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
  • RISPERIDONE-EP Impurity E

  • Impurity: RISPERIDONE-EP Impurity E
  • Chemical Name: (6RS)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl]ethyl]-2,6-dimethyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
  • RISPERIDONE - EP Impurity F

  • Impurity: RISPERIDONE - EP Impurity F
  • Chemical Name: 2-[2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-3-yl]ethyl 4-(6-fluoro-1,2- benzisoxazol-3-yl)piperidin-1-carboxylate
  • RISPERIDONE - EP Impurity H

  • Impurity: RISPERIDONE - EP Impurity H
  • Chemical Name: 3-[2-[4-(2,4-difluorobenzoyl)piperidin-1-yl]ethyl]-2-methyl-6,7,8,9-tetrahydro-4Hpyrido[ 1,2-a]pyrimidin-4-one
  • RISPERIDONE - EP Impurity I

  • Impurity: RISPERIDONE - EP Impurity I
  • Chemical Name: 3-[2-[4-[4-fluoro-2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl]benzoyl]piperidin-1-yl] ethyl]-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
  • RISPERIDONE- N-OXIDE

  • Impurity: RISPERIDONE- N-OXIDE
  • Chemical Name: 3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-oxido-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one

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