Impurities

Sildenafil Impurity B

Product Code:Ax-IMP830
CAS Number:1094598-75-0
Synonyms:4-((4-ethoxy-3-(1-methyl-7-oxo-3-propyl-6,7-dihydro-1H-pyrazolo[4,3-d]pyrimidin-5-yl)phenyl)sulfonyl)-1-methylpiperazine 1-oxide
Molecular Formula:C22H30N6O5S
Molecular Weight:490.58

Sildenafil Lactam Impurity

Product Code:Ax-IMP829
CAS Number:139756-21-1
Synonyms:5-(2-ethoxyphenyl)-1-methyl-3-propyl-1,6-dihydro-7H-pyrazolo[4,3-d]pyrimidin-7-one
Molecular Formula:C17H20N4O2
Molecular Weight:312.37

Lamotrigine related compound C

Product Code:Ax-IMP834
CAS Number:252186-78-0
Synonyms:3-amino-6-(2,3-dichlorophenyl)-1,2,4-triazin-5(4H)-one
Molecular Formula:C9H6Cl2N4O
Molecular Weight:257.07

Lamotrigine related compound B

Product Code:Ax-IMP835
CAS Number:50-45-3
Synonyms:2,3-dichlorobenzoic acid
Molecular Formula:C7H4Cl2O2
Molecular Weight:191.01

Metformin Related Compound B

Product Code:Ax-IMP836
CAS Number:1674-62-0 (HCl) ; 1609-00-3 (base)
Synonyms:N-methyl-imidodicarbonimidic Diamide Monohydrochloride
Molecular Formula:C3H11N5O4S
Molecular Weight:151.6

Rosuvastatin Process impurity

Product Code:Ax-IMP837
CAS Number:124752-23-4
Synonyms:tert-butyl 2-((4R,6S)-6-formyl-2,2-dimethyl-1,3-dioxan-4-yl)acetate
Molecular Formula:C13H22O5
Molecular Weight:258.32

Rivastigmine Impurity G

Product Code:Ax-IMP838
CAS Number:23308-82-9
Synonyms:1-(3-methoxyphenyl)ethan-1-ol
Molecular Formula:C9H12O2
Molecular Weight:152.19

Rivastigmine Impurity

Product Code:Ax-IMP839
CAS Number:923035-06-7
Synonyms:3-(1-(methylamino)ethyl)phenol
Molecular Formula:C9H13NO
Molecular Weight:151.21

Trimethoprim Process impurity 2

Product Code:Ax-IMP845
CAS Number:30077-85-1
Synonyms:3-(dimethylamino)-2-(3,4,5-trimethoxybenzyl)acrylonitrile
Molecular Formula:C15H20N2O3
Molecular Weight:276.34

Trimethoprim Process impurity 1

Product Code:Ax-IMP841
CAS Number:141292-62-8
Synonyms:(Z)-2-(methoxymethyl)-3-(3,4,5-trimethoxyphenyl)acrylonitrile
Molecular Formula:C14H17NO4
Molecular Weight:263.29