Paliperidone Tetradehydro Impurity; 6,7,8,9-Dehydro 9-Hydroxy Risperidone

Paliperidone Tetradehydro Impurity; 6,7,8,9-Dehydro 9-Hydroxy Risperidone

3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one

Impurity reference standard used for related substances testing of Paliperidone;9-Hydroxy Risperidone ;Risperidone EP Imp C drug substance and drug product per pharmacopoeial limits.