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Pharmaceutical analytical standards

Active ingredients, pharmacopoeial impurities, metabolites, nitrosamines and labelled standards.

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Results 781-790 of 36,550

Sitagliptin Impurity 40

ImpurityLevels of characterisation
Cat. No.
P-S051-103
Formula
C16H16F5N5O
Family
Sitagliptin
Synonyms
(3S)-3-Amino-4-(2,4-difluorophenyl)-1-[3-(trifluoromethyl)-6,8-dihydro-5H-[1,2,4]triazolo[4,3-a]pyrazin-7-yl]butan-1-one

Sitagliptin Impurity 43

ImpurityLevels of characterisation
Cat. No.
P-S051-106
Formula
C10H10F6N6O2
Family
Sitagliptin
Synonyms
N,N'-Bis[[5-(trifluoromethyl)-1,3,4-oxadiazol-2-yl]methyl]ethane-1,2-diamine

Sitagliptin Impurity 45

ImpurityLevels of characterisation
Cat. No.
P-S051-108
Formula
C16H21F2NO4
Family
Sitagliptin
Synonyms
Methyl (3R)-4-(2,5-difluorophenyl)-3-[(2-methylpropan-2-yl)oxycarbonylamino]butanoate

Sitagliptin Impurity 51

ImpurityLevels of characterisation
Cat. No.
P-S051-114
Formula
C20H23F6N5O
Family
Sitagliptin
Synonyms
(3R)-3-(tert-Butylamino)-1-[3-(trifluoromethyl)-6,8-dihydro-5H-[1,2,4]triazolo[4,3-a]pyrazin-7-yl]-4-(2,4,5-trifluorophenyl)butan-1-one

Sitagliptin Impurity 54

ImpurityLevels of characterisation
Cat. No.
P-S051-117
Formula
C19H25F3N2O4
Family
Sitagliptin
Synonyms
tert-Butyl N-[(2R)-4-morpholin-4-yl-4-oxo-1-(2,4,5-trifluorophenyl)butan-2-yl]carbamate

Sitagliptin Impurity 58

ImpurityLevels of characterisation
Cat. No.
P-S051-121
Formula
C17H15F6N5O2
Family
Sitagliptin
Synonyms
N-[(2R)-4-Oxo-4-[3-(trifluoromethyl)-6,8-dihydro-5H-[1,2,4]triazolo[4,3-a]pyrazin-7-yl]-1-(2,4,5-trifluorophenyl)butan-2-yl]formamide

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