uridine and its Impurities
Uridine is used to treat an overdose of capecitabine or fluorouracil. Uridine is a glycosylated pyrimidine-analog containing uracil attached to a ribose.Reference standards of Uridine API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


5-((2S,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1-methylpyrimidine-2,4(1H,3H)-dione
5-((2S,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-1-methylpyrimidine-2,4(1H,3H)-dione
Catalogue No.:PA 21 0031015
CAS :
13860-38-3
Molecular Formula : C10H14N2O6
Molecular Weight : 258.23


Methyl (S)-2-amino-4-(3-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-4,6-dimethyl-9-oxo-4,9-dihydro-3H-imidazo[1,2-a]purin-7-yl)butanoate
Methyl (S)-2-amino-4-(3-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-4,6-dimethyl-9-oxo-4,9-dihydro-3H-imidazo[1,2-a]purin-7-yl)butanoate
Catalogue No.:PA 21 0031033
CAS :
898543-15-2
Molecular Formula : C19H26N6O7
Molecular Weight : 450.45


Methyl (2S)-2-amino-4-(3-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-4,6-dimethyl-9-oxo-4,9-dihydro-3H-imidazo[1,2-a]purin-7-yl)-3-hydroxybutanoate
Methyl (2S)-2-amino-4-(3-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-4,6-dimethyl-9-oxo-4,9-dihydro-3H-imidazo[1,2-a]purin-7-yl)-3-hydroxybutanoate
Catalogue No.:PA 21 0031035
CAS :
1613528-01-0
Molecular Formula : C19H26N6O8
Molecular Weight : 466.45


1-((2R,3R,4R,5R)-4-Hydroxy-5-(hydroxymethyl)-3-methoxytetrahydrofuran-2-yl)-5-(((3-methylbut-2-en-1-yl)amino)methyl)pyrimidine-2,4(1H,3H)-dione
1-((2R,3R,4R,5R)-4-Hydroxy-5-(hydroxymethyl)-3-methoxytetrahydrofuran-2-yl)-5-(((3-methylbut-2-en-1-yl)amino)methyl)pyrimidine-2,4(1H,3H)-dione
Catalogue No.:PA 21 0031036
CAS :
872710-80-0
Molecular Formula : C16H25N3O6
Molecular Weight : 355.39