PRODUCT CATALOG
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Risperidone
Human APIstandards in stock
Impurity and working standards - ready stock
| Structure | Standard | CAS | Availability | |
|---|---|---|---|---|
| Risperidone Imp-L (RS-8) | 63234-80-0 | In stock | |
 | Impurity/Diphthalimido Morpholinone Analog | 1643354-27-1 | In stock |
Characterised impurities
| Impurity | Chemical name | Pharmacopoeia |
|---|---|---|
| IMPURITY “E” i.e. 6- Methylrisp eridone | (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, | BP/EP/ USDMF |
| , Impurity “F” | (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 | BP/EP |
| IMPURITY “G” | 3-[2-[4-(4-Fluoro-2- hydroxybenzoyl)pipe ridin-1-yl]ethyl]-2- methyl-6,7,8,9- tetrahydro-4H- pyrido[1,2- a]pyrimidin-4-one | EP/USP |
| Impurity “H” | 3-[2-[4-(2,4- difluorobenzoyl)pipe ridin-1-yl]ethyl]-2- methyl-6,7,8,9- tetrahydro- 4Hpyrido[1,2- a]pyrimidin-4-one, | BP/EP |
| Impurity “L” | 3-(2-chloroethyl)-2- methyl-6,7,8,9- tetrahydro-4H- pyrido [1,2- a]pyrimidin-4-one (Piperidopyrimidino intermediate | BP/EP |
| Impurity “M” | 6-Fluoro-3-(4- piperidin-1-yl)-1,2- benzisoxazole (isoxazol intermediate) | BP/EP |
| “Des Tetrahydr o” | 3-(2-(4-(6- Fluorobenzo[d]isoxa zol-3-yl)piperidin-1- yl)ethyl)-2-methyl- 4H-pyrido[1,2- α]pyrimidin-4-one | IHT |
| Cis-N- Oxide | 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 | USP |
| "HYD" impurity | (2,4-Difluorophenyl)- piperidin-4-yl methanone hydrochloride | IHT |
| "Oxime" impurity “QUATERN | N-(2,4- Difluorophenyl]piper idin-4- ylmethylidene] hydroxylamine 6-Fluoro-3-[1-bis-[2- (methyl-6,7,8,9- tetrahydropyridol | IHT USP/IH |
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