Impurity Standards

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Risperidone Cis N-Oxide

Product Code:
DH/RIS/1014
Molecular Formula:
C23H27FN4O3
CAS Number:
NA
Molecular Weight:
426.48
Synonyms: Cis-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-oxido-piperidinyl]ethyl]-6,7,8,9-tetrahydro-2-Methyl-4H-pyrido[1,2-a]pyrimidin-4-one.


Risperidone Quaternary Salt

Product Code:
DH/RIS/1015
Molecular Formula:
C34H42FIN6O3
CAS Number:
NA
Molecular Weight:
728.64
Synonyms: 6-Fluoro-3-[1-bis-[2-(methyl-6,7,8,9-tetrahydropyridol[1,2,a]pyrimidin-4-one-3-yl)ethyl]piperidinium]benzisoxazole Iodide


Risperidone EP Impurity I

Product Code:
DH/RIS/1016
Molecular Formula:
C35H39F2N5O3
CAS Number:
1329796-66-8
Molecular Weight:
615.71
Synonyms: 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 EP Impurity J

Product Code:
DH/RIS/1017
Molecular Formula:
C35H40F2N6O3
CAS Number:
1346606-24-3
Molecular Weight:
630.73
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.


Rivastigmine USP Related Compound A

Product Code:
DH/RTN/1001
Molecular Formula:
C20H18O8
CAS Number:
32634-68-7
Molecular Weight:
386.35
Synonyms: (+)-Di-p-toluoyl-D-(+)-tartaric acid


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