Risperidone > Impurities > 31

Structure Compound Pricing
2,4-Difluorophenyl 4-Piperidinyl Ketoxime
CS-T-90432 > Impurities

Molecular Formula : C12H14F2N2O   Molecular Weight: 240.25   CAS Number: 84163-46-2
Synonyms : (2,4-Difluorophenyl)-4-piperidinyl-methanone Oxime; (2,4-Difluorophenyl)(4-piperidinyl)methanone Oxime; (E)-(2,4-Difluorophenyl)(piperidin-4-yl)methanone Oxime;
Parent API : Risperidone
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5,6,7,8-Tetradehydro Risperidone
CS-T-87352 > Impurities

Molecular Formula : C23H23FN4O2   Molecular Weight: 406.45   CAS Number: 108855-18-1
Synonyms : 3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one; 1,2-Benzisoxazole, 4H-pyrido[1,2-a]pyrimidin-4-one deriv.
Parent API : Risperidone
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3-[2-[4-(6-Fluoro-2-benzoxazolyl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one (Risperidone Impurity)
CS-T-76201 > Impurities

Molecular Formula : C23H27FN4O2   Molecular Weight: 410.48   CAS Number: 1005191-81-0  
Parent API : Risperidone
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3-[2-[4-(2-Fluoro-4-hydroxybenzoyl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one
CS-T-75166 > Impurities

Molecular Formula : C23H28FN3O3   Molecular Weight: 413.49   CAS Number: 1391053-32-9  
Parent API : Risperidone
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Risperidone EP Impurity H
CS-T-18345 > Impurities

Molecular Formula : C23H27F2N3O2   Molecular Weight: 415.48   CAS Number: 158697-67-7
Synonyms : 3-[2-[4-(2,4-Difluorobenzoyl)piperidin-1-yl]ethyl]-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one;2,4-Difluorobenzoyl Risperidone Impurity.
Parent API : Risperidone
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Risperidone EP Impurity C
CS-O-02070 > Impurities

Molecular Formula : C23H27FN4O3   Molecular Weight: 426.48   CAS Number: 144598-75-4
Synonyms : Risperidone EP Impurity C;3-{2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1- yl]ethyl}-2-methyl-4H,6H,7H,8H,9H-pyrido[1,2- a]pyrimidin-4-one;(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; Paliperidone; 9-Hydroxy Risperidone ; yl]ethyl}-2-methyl-4H,6H,7H,8H,9H-pyrido[1,2- a]pyrimidin-4-one;Risperidone Impurity C;9-Hydroxy Risperidone;Hydroxy risperidone
Parent API : Risperidone
USD 46.00 / 10mg
USD 68.00 / 25mg
USD 103.00 / 50mg
3-Ethyl-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
CS-T-22119 > Impurities

Molecular Formula : C11H16N2O   Molecular Weight: 192.26   CAS Number: 70381-58-7
Synonyms : 3-Ethyl-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one;3-ethyl-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
Parent API : Risperidone
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Risperidone Quaternary salt impurity
CS-O-11347 > Impurities

Molecular Formula : C34H42FN6O3   Molecular Weight: 601.73   CAS Number: NA
Synonyms : 4-(6-fluorobenzo[d]isoxazol-3-yl)-1,1-bis(2-(2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-3-yl)ethyl)piperidin-1-ium
Parent API : Risperidone
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Risperidone EP Impurity D
CS-T-24347 > Impurities

Molecular Formula : C23H27FN4O2   Molecular Weight: 410.48   CAS Number: 1199589-74-6
Synonyms : 3-[2-[4-(5-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one;5-Fluoro Risperidone.
Parent API : Risperidone
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9-Keto Risperidone
CS-T-30402 > Impurities

Molecular Formula : C23H25FN4O3   Molecular Weight: 424.47   CAS Number: 1189516-65-1
Synonyms : 3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-7,8-dihydro-2-methyl-4H-pyrido[1,2-a]pyrimidine-4,9(6H)-dione;Paliperidone keto impurity.
Parent API : Risperidone
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Risperidone N-Oxide
CS-T-61159 > Impurities

Molecular Formula : C23H27FN4O3   Molecular Weight: 426.49   CAS Number: 832747-55-4
Synonyms : 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;4-(6-fluorobenzo[d]isoxazol-3-yl)-1-(2-(2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-3-yl)ethyl)piperidine 1-o
Parent API : Risperidone
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Risperidone Pyrimidinone-N-oxide
CS-T-61160 > Impurities

Molecular Formula : C23H27FN4O3   Molecular Weight: 426.48   CAS Number: 1301724-91-3
Synonyms : 3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one N-Oxide;Risperidone impurity;3-(2-(4-(6-fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido
Parent API : Risperidone
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Risperidone EP Impurity E
CS-O-11265 > Impurities

Molecular Formula : C24H29FN4O2   Molecular Weight: 424.51   CAS Number: 1346602-28-5
Synonyms : 3-[2-4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl-6,7,8,9-tetrahydro-2,6-dimethyl-4H-pyrido[1,2-a]pyrimidin-4-one;6-Methyl Risperidone.;3-[2-4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl-6,7,8,9-tetrahydro-2,6-dimethyl-4H-pyrido[1,2-a]pyrimidin-4-one;6-Methyl Risperidone.
Parent API : Risperidone
USD 274.00 / 10mg
USD 410.00 / 25mg
Risperidone EP Impurity J
CS-O-15316 > Impurities

Molecular Formula : C35H40F2N6O3   Molecular Weight: 630.73   CAS Number: 1346606-24-3
Synonyms : 3-[2-[4-[(Z)-[4-fluoro-2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl]phenyl] (hydroxyimino)methyl]piperidin-1-yl]ethyl]-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1, 2-a]pyrimidin-4-one.
Parent API : Risperidone
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9-Methyl Risperidone
CS-T-35085 > Impurities

Molecular Formula : C24H29FN4O2   Molecular Weight: 424.51   CAS Number: 138271-01-9
Synonyms : 3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2,9-dimethyl-4H-pyrido[1,2-a]pyrimidin-4-one;3-(2-(4-(6-fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-2,9-dimethyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
Parent API : Risperidone
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Risperidone EP Impurity A
CS-T-41864 > Impurities

Molecular Formula : C23H28F2N4O2   Molecular Weight: 430.49   CAS Number: 691007-09-7
Synonyms : 3-[2-[4-[(E)-(2,4-Difluorophenyl)(hydroxyimino)methyl]-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one;Risperidone E-Oxime Impurity.
Parent API : Risperidone
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Risperidone EP Impurity B
CS-T-41865 > Impurities

Molecular Formula : C23H28F2N4O2   Molecular Weight: 430.49   CAS Number: 132961-05-8
Synonyms : 3-[2-[4-[(Z)-(2,4-Difluorophenyl)(hydroxyimino)methyl]-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one;Risperidone Z-Oxime Impurity.
Parent API : Risperidone
USD 684.00 / 10mg
USD 1,026.00 / 25mg
USD 1,539.00 / 50mg
Risperidone Related Compound G
CS-T-54841 > Impurities

Molecular Formula : C23H28FN3O3   Molecular Weight: 413.49   CAS Number: 152542-00-2
Synonyms : 3-[2-[4-(4-Fluoro-2-hydroxybenzoyl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one Hydrochloride; Risperidone 2-Hydroxybenzoyl Impurity ; 3-[2-[4-((E)-(4-Fluoro-2-hydroxybenzoyl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one Hydrochloride; R 72111Hydrochloride; Risperidone Impurity Hydrochloride
Parent API : Risperidone
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Risperidone EP Impurity I
CS-T-54833 > Impurities

Molecular Formula : C35H39F2N5O3   Molecular Weight: 615.71   CAS Number: 1329796-66-8
Synonyms : 3-[2-[4-{4-Fluoro-2-[4-(6-fluorobenzo[d]soxazol-3-yl)piperidin-1-yl]benzolyl]piperidin-1-yl]ethyl-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one; 3-[2-[4-[4-Fluoro-2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl]benzolyl]piperidin-1-yl]ethyl-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one (Risperidone Impurity).
Parent API : Risperidone
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Risperidone EP Impurity F
CS-O-15315 > Impurities

Molecular Formula : C24H27FN4O4   Molecular Weight: 454.49   CAS Number: 1346603-86-8
Synonyms : 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,
Parent API : Risperidone
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Risperidone EP Impurity L
CS-O-31450 > Impurities

Molecular Formula : C11H15ClN2O   Molecular Weight: 226.7   CAS Number: 63234-80-0
Synonyms : 3-(2-Chloroethyl)-2-Methyl-6,7,8,9-Tetrahydro-4H-Pyrido-[1,2-a]-Pyrimidine-4-One;3-(2-chloroethyl)-2-methyl-6,7,8,9-tetrahydro-4Hpyrido[1,2-a]pyrimidin-4-one;piperidopyrimidinone intermediate.;CS-M-42637; 3-(2-Chloroethyl)-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one
Parent API : Risperidone
USD 104.00 / 5g
USD 162.00 / 10g
6-Fluoro-3-(4-Piperidinyl)-1,2-Benzisoxazole Hydrochloride
CS-O-31452 > Impurities

Molecular Formula : C12H14ClFN2O   Molecular Weight: 256.7   CAS Number: 84163-13-3
Synonyms : Risperidone EP Impurity M;4-(6-Fluoro-1,2-benzisoxazol-3-yl)piperidine Hydrochloride;Paliperidone Amine Impurity;6-Fluoro-3-(4-piperidinyl)-1,2-benzisoxazole Hydrochloride;Paliperidone Amine Impurity.
Parent API : Risperidone
USD 30.00 / 10mg
USD 46.00 / 25mg
USD 68.00 / 50mg
(R)-9-Hydroxy Risperidone
CS-T-56445 > Impurities

Molecular Formula : C23H27FN4O3   Molecular Weight: 426.49   CAS Number: 130049-85-3
Synonyms : (9R)-3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro;3-(2-(4-(6-fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
Parent API : Risperidone
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(S)-9-Hydroxy Risperidone
CS-T-56446 > Impurities

Molecular Formula : C23H27FN4O3   Molecular Weight: 426.48   CAS Number: 147663-01-2
Synonyms : (9S)-3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro;3-(2-(4-(6-fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
Parent API : Risperidone
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6-Desfluoro-6-hydroxy Risperidone
CS-T-15991 > Impurities

Molecular Formula : C23H28N4O3   Molecular Weight: 408.49   CAS Number: 106266-11-9
Synonyms : 6,7,8,9-Tetrahydro-3-[2-[4-(6-hydroxy-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one;3-(1-(2-(2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-3-yl)ethyl)piperidin-4-yl)benzo[d]isoxazol-6(2H)-one
Parent API : Risperidone
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6-Desfluoro-6-methoxy Risperidone
CS-T-15995 > Impurities

Molecular Weight: 422.53   CAS Number: 1246817-15-1
Synonyms : 6,7,8,9-Tetrahydro-3-[2-[4-(6-methoxy-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one;3-(2-(4-(6-methoxybenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
Parent API : Risperidone
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Risperidone EP Impurity K
CS-T-16019 > Impurities

Molecular Formula : C23H28N4O2   Molecular Weight: 392.49   CAS Number: 106266-09-5
Synonyms : 3-[2-[4-(1,2-Benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one;Desfluoro Risperidone.
Parent API : Risperidone
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(E)-1-Acetyl-α-(5-fluoro-2-hydroxyphenyl)-N-hydroxy-4-piperidinemethanimine
CS-T-47239 > Impurities

Molecular Weight: 280.29   CAS Number: 84162-97-0
Synonyms : (aE)-)-N-hydroxy-4-piperidinemethanimine;(E)-1-(4-((5-fluoro-2-hydroxyphenyl)(hydroxyimino)methyl)piperidin-1-yl)ethanone
Parent API : Risperidone
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Dehydro-Risperidone
CS-O-33197 > Impurities

Molecular Formula : C23H25FN4O2   Molecular Weight: 408.47   CAS Number: 168906-58-9
Synonyms : 3-(2-(4-(6-fluorobenzo[d]isoxazol-3-yl)-5,6-dihydropyridin-1(2H)-yl)ethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one; 3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)-3,6-dihydro-1(2H)-pyridinyl]ethyl]-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one
Parent API : Risperidone
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(E)-1-Acetyl-N-(acetyloxy)-α-(5-fluoro-2-hydroxyphenyl)-4-piperidinemethanimine
CS-T-47060 > Impurities

Molecular Formula : C16H19F2O4   Molecular Weight: 322.34   CAS Number: 84163-52-0
Synonyms : (aE)--hydroxyphenyl)-4-piperidinemethanimine;(E)-1-(acetoxyimino)-1-(1-(5-fluoro-2-hydroxyphenyl)piperidin-4-yl)propan-2-one
Parent API : Risperidone
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Bicyclo Risperidone
CS-O-16998 > Impurities

Molecular Formula : C23H28FIN4O2   Molecular Weight: 538.40   CAS Number: NA
Synonyms : (1s,4r)-3-(4-Fluoro-2-hydroxyphenyl)-1-(2-(2-methyl-4-oxo-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-3-yl)ethyl)-1,2-diazabicyclo[2.2.2]oct-2-en-1-ium Iodide
Parent API : Risperidone
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