Impurity Standards

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Simvastatin EP Impurity K

Product Code:
DH/SMV/1012
Molecular Formula:
C25H40O5
CAS Number:
92083-03-9
Molecular Weight:
420.58
Synonyms: (1S,3S,4aR,7S,8S,8aS)-8-(2-((2R,4R)-4-Hydroxy-6-oxotetrahydro-2H-pyran-2-yl)ethyl)-3,7-dimethyl-1,2,3,4,4a,7,8,8a-octahydronaphthalen-1-yl 2,2-dimethylbutanoate; Simvastatin 4α,5-Dihydro Impurity; 4α,5-Dihydro Simvastayin


Sitagliptin EP Impurity A

Product Code:
DH/SGN/1001
Molecular Formula:
C16H18F6N5O5P
CAS Number:
823817-58-9
Molecular Weight:
505.31
Synonyms: (S)-4-Oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]-1-(2,4,5-trifluorophenyl)butan-2-amine phosphate


Sitagliptin EP Impurity B

Product Code:
DH/SGN/1002
Molecular Formula:
C16H16F5N5O
CAS Number:
1345822-87-8
Molecular Weight:
389.32
Synonyms: (R)-4-Oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]-1-(2,5-difluorophenyl)butan-2-amine


Sitagliptin EP Impurity C

Product Code:
SGN/1003
Molecular Formula:
C16H16F5N5O
CAS Number:
1345822-86-7
Molecular Weight:
389.32
Synonyms: (R)-4-Oxo-4-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]-1-(2,4-difluorophenyl)butan-2-amine


Sitagliptin Enamine Impurity

Product Code:
DH/SGN/1004
Molecular Formula:
C16H13F6N5O
CAS Number:
767340-03-4
Molecular Weight:
405.3
Synonyms: (2Z)-3-Amino-1-[5,6-dihydro-3-(trifluoromethyl)-1,2,4-triazolo[4,3-a]pyrazin-7(8H)-yl]-4-(2,4,5-trifluorophenyl)-2-buten-1-one;


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