cefdinir and its Impurities
Cefdinir, also known as Omnicef. It is sold under the brand name Omnicef among others, is an antibiotic used to treat pneumonia, otitis media, strep throat, and cellulitis.. Reference standards of Cefdinir API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below
2(R)-2-[(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido]-2-[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]acetic Acid
2(R)-2-[(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido]-2-[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]acetic Acid
Catalogue No.:PA 03 89510
CAS :
2489879-07-2
Molecular Formula : C14H15N5O6S2
Molecular Weight : 413.43
(6R,7R)-7-[2-(2-Amino-4-thiazolyl)acetamido]-8-oxo-3-vinyl-5-thia-1-azabicyclo[4,2,0]oct-2-ene-2-carboxylic Acid
(6R,7R)-7-[2-(2-Amino-4-thiazolyl)acetamido]-8-oxo-3-vinyl-5-thia-1-azabicyclo[4,2,0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PA 03 89590
CAS :
79350-10-0
Molecular Formula : C14H14N4O4S2
Molecular Weight : 366.42
2(R)-2-[(Z)-2-(Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)]-2-[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]acetic Acid (Mixture of 4 Diastereomers)
2(R)-2-[(Z)-2-(Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)]-2-[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]acetic Acid (Mixture of 4 Diastereomers)
Catalogue No.:PA 03 89650
CAS :
178422-45-2
Molecular Formula : C14H15N5O6S2
Molecular Weight : 413.43
Cefdinir Related Compound A (2(R)-2-[(Z)-2-(2-aminothiazol-4-yl)-2-(hydroxyimino)acetamido]-2-[(2RS (1097625)
Cefdinir Related Compound A (2(R)-2-[(Z)-2-(2-aminothiazol-4-yl)-2-(hydroxyimino)acetamido]-2-[(2RS (1097625)
Catalogue No.:PA USP1097625
CAS :
2489879-07-2
Molecular Formula : NA
Molecular Weight : NA
Cefdinir Related Compound B ((6R,7R)-7-[2-(2-amino-4-thiazolyl)acetamido]-8-oxo-3-vinyl-5-thia-1-az (1097589)
Cefdinir Related Compound B ((6R,7R)-7-[2-(2-amino-4-thiazolyl)acetamido]-8-oxo-3-vinyl-5-thia-1-az (1097589)
Catalogue No.:PA USP1097589
CAS :
79350-10-0
Molecular Formula : NA
Molecular Weight : NA
(6S,7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid 5-oxide
(6S,7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid 5-oxide
Catalogue No.:PA 03 89670
CAS :
NA
Molecular Formula : C14H13N5O6S2
Molecular Weight : 411.41
(6R,7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-3-(2-hydroxyethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
(6R,7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-3-(2-hydroxyethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PA 03 89680
CAS :
NA
Molecular Formula : C14H15N5O6S2
Molecular Weight : 413.42
(2R)-2-((E)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-2-((2R)-5-methyl-7-oxo-1,2,5,7-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)acetic Acid
(2R)-2-((E)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-2-((2R)-5-methyl-7-oxo-1,2,5,7-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)acetic Acid
Catalogue No.:PA 03 89690
CAS :
NA
Molecular Formula : C14H15N5O6S2
Molecular Weight : 413.42
(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-(((2R)-5-methyl-7-oxo-1,2,5,7-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)methyl)acetamide
(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-(((2R)-5-methyl-7-oxo-1,2,5,7-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)methyl)acetamide
Catalogue No.:PA 03 89710
CAS :
NA
Molecular Formula : C13H15N5O4S2
Molecular Weight : 369.41
(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-((6R)-3-methyl-1,7-dioxo-1,4,5a,6-tetrahydro-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)acetamide
(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-((6R)-3-methyl-1,7-dioxo-1,4,5a,6-tetrahydro-3H,7H-azeto[2,1-b]furo[3,4-d][1,3]thiazin-6-yl)acetamide
Catalogue No.:PA 03 89720
CAS :
NA
Molecular Formula : C14H13N5O5S2
Molecular Weight : 395.41
(6R,7R)-7-((6R,7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
(6R,7R)-7-((6R,7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PA 03 89740
CAS :
NA
Molecular Formula : C23H21N7O7S3
Molecular Weight : 603.64
4-Methoxybenzyl (6R,7R)-8-oxo-7-(2-phenylacetamido)-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
4-Methoxybenzyl (6R,7R)-8-oxo-7-(2-phenylacetamido)-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Catalogue No.:PA 03 89750
CAS :
119608-90-1
Molecular Formula : C25H24N2O5S
Molecular Weight : 464.54
(6R,7R)-8-Oxo-7-(2-phenylacetamido)-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
(6R,7R)-8-Oxo-7-(2-phenylacetamido)-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PA 03 89760
CAS :
33748-00-4
Molecular Formula : C17H16N2O4S
Molecular Weight : 344.39
(6R,7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-((trityloxy)imino)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
(6R,7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-((trityloxy)imino)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PAI 03 030060
CAS :
NA
Molecular Formula : C32H27N5O5S2
Molecular Weight : 625.72
(6R,7R)-7-((E)-2-(2-Aminothiazol-4-yl)-2-((trityloxy)imino)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
(6R,7R)-7-((E)-2-(2-Aminothiazol-4-yl)-2-((trityloxy)imino)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PAI 03 030090
CAS :
NA
Molecular Formula : C33H27N5O5S2
Molecular Weight : 637.73
(6R,7R)-7-((Z)-2-(Acetoxyimino)-2-(2-aminothiazol-4-yl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
(6R,7R)-7-((Z)-2-(Acetoxyimino)-2-(2-aminothiazol-4-yl)acetamido)-3-methyl-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Catalogue No.:PAI 03 030110
CAS :
2379242-26-7
Molecular Formula : C15H15N5O6S2
Molecular Weight : 425.43
(6R,7R)-7-((E)-2-(Acetoxyimino)-2-(2-aminothiazol-4-yl)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
(6R,7R)-7-((E)-2-(Acetoxyimino)-2-(2-aminothiazol-4-yl)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PAI 03 030130
CAS :
NA
Molecular Formula : C16H15N5O6S2
Molecular Weight : 437.45
(6R,7R)-8-Oxo-7-(4-(trityloxy)isoxazole-3-carboxamido)-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
(6R,7R)-8-Oxo-7-(4-(trityloxy)isoxazole-3-carboxamido)-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PAI 03 030190
CAS :
NA
Molecular Formula : C32H25N3O6S
Molecular Weight : 579.63
Cefdinir
(7S)-7-((7S)-7-((Z)-2-(Acetoxyimino)-2-(2-aminothiazol-4-yl)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PAI 03 030222
CAS :
NA
Molecular Formula : C25H23N7O8S3
Molecular Weight : 645.68
4-Methoxybenzyl (6R,7R)-7-amino-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
4-Methoxybenzyl (6R,7R)-7-amino-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Catalogue No.:PAI 03 030223
CAS :
114876-07-2
Molecular Formula : C17H18N2O4S
Molecular Weight : 346.4
4-Methoxybenzyl (6R,7R)-7-(4-((4-methoxybenzyl)oxy)isoxazole-3-carboxamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
4-Methoxybenzyl (6R,7R)-7-(4-((4-methoxybenzyl)oxy)isoxazole-3-carboxamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Catalogue No.:PAI 03 030224
CAS :
NA
Molecular Formula : C29H27N3O8S
Molecular Weight : 577.61
4-Methoxybenzyl (6R,7R)-7-amino-3-(chloromethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
4-Methoxybenzyl (6R,7R)-7-amino-3-(chloromethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Catalogue No.:PAI 03 030225
CAS :
106773-36-8
Molecular Formula : C16H17ClN2O4S
Molecular Weight : 368.83
4-Methoxybenzyl (6R,7R)-3-(chloromethyl)-7-(4-hydroxyisoxazole-3-carboxamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
4-Methoxybenzyl (6R,7R)-3-(chloromethyl)-7-(4-hydroxyisoxazole-3-carboxamido)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Catalogue No.:PAI 03 030226
CAS :
NA
Molecular Formula : C20H18ClN3O7S
Molecular Weight : 479.89
4-Methoxybenzyl (6R,7R)-7-(4-hydroxyisoxazole-3-carboxamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
4-Methoxybenzyl (6R,7R)-7-(4-hydroxyisoxazole-3-carboxamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Catalogue No.:PAI 03 030227
CAS :
NA
Molecular Formula : C21H19N3O7S
Molecular Weight : 457.46
(6R,7R)-7-Amino-3-(chloromethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
(6R,7R)-7-Amino-3-(chloromethyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic Acid
Catalogue No.:PA 03 0891002
CAS :
51813-38-8
Molecular Formula : C8H9ClN2O3S
Molecular Weight : 248.68
(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-{[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]methyl}acetamide Dihydrochloride (Mixture of Diastereomers)
(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)-N-{[(2RS,5RS)-5-methyl-7-oxo-2,4,5,7-tetrahydro-1H-furo[3,4-d][1,3]thiazin-2-yl]methyl}acetamide Dihydrochloride (Mixture of Diastereomers)
Catalogue No.:PA 03 0891003
CAS :
NA
Molecular Formula : C13H17Cl2N5O4S2
Molecular Weight : 442.33
(3S,10R,13S)-10,13-Dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydrospiro[cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolan]-3-yl Acetate
(3S,10R,13S)-10,13-Dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydrospiro[cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolan]-3-yl Acetate
Catalogue No.:PAI 03 030235
CAS :
NA
Molecular Formula : C23H34O4
Molecular Weight : 374.52
(3S,10R,13S)-10,13-Dimethyl-7-oxo-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydrospiro[cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolan]-3-yl Acetate
(3S,10R,13S)-10,13-Dimethyl-7-oxo-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydrospiro[cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolan]-3-yl Acetate
Catalogue No.:PAI 03 030236
CAS :
NA
Molecular Formula : C23H32O5
Molecular Weight : 388.5
(3S,7R,10R,13S)-7-Hydroxy-10,13-dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydrospiro[cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolan]-3-yl Acetate
(3S,7R,10R,13S)-7-Hydroxy-10,13-dimethyl-1,2,3,4,7,8,9,10,11,12,13,14,15,16-tetradecahydrospiro[cyclopenta[a]phenanthrene-17,2'-[1,3]dioxolan]-3-yl Acetate
Catalogue No.:PAI 03 030237
CAS :
NA
Molecular Formula : C23H34O5
Molecular Weight : 390.52
(3S,7R,10R,13S)-7-Hydroxy-10,13-dimethyl-17-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl Acetate
(3S,7R,10R,13S)-7-Hydroxy-10,13-dimethyl-17-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-yl Acetate
Catalogue No.:PAI 03 030238
CAS :
NA
Molecular Formula : C21H30O4
Molecular Weight : 346.47
(3S,7S,10R,13S)-3-Acetoxy-10,13-dimethyl-17-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-7-yl Benzoate
(3S,7S,10R,13S)-3-Acetoxy-10,13-dimethyl-17-oxo-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-7-yl Benzoate
Catalogue No.:PAI 03 030239
CAS :
NA
Molecular Formula : C28H34O5
Molecular Weight : 450.58
Trimethylsilyl (7R)-7-(2-(2-aminothiazol-4-yl)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Trimethylsilyl (7R)-7-(2-(2-aminothiazol-4-yl)acetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Catalogue No.:PAI 03 030241
CAS :
NA
Molecular Formula : C17H22N4O4S2Si
Molecular Weight : 438.59
Trimethylsilyl (7R)-7-(2-(2-aminothiazol-4-yl)-2-oxoacetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Trimethylsilyl (7R)-7-(2-(2-aminothiazol-4-yl)-2-oxoacetamido)-8-oxo-3-vinyl-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate
Catalogue No.:PAI 03 030244
CAS :
NA
Molecular Formula : C17H20N4O5S2Si
Molecular Weight : 452.58
tert-Butyl (Z)-(4-(2-((2,2-diethoxyethyl)amino)-1-(hydroxyimino)-2-oxoethyl)thiazol-2-yl)carbamate
tert-Butyl (Z)-(4-(2-((2,2-diethoxyethyl)amino)-1-(hydroxyimino)-2-oxoethyl)thiazol-2-yl)carbamate
Catalogue No.:PAI 03 030246
CAS :
NA
Molecular Formula : C16H26N4O6S
Molecular Weight : 402.47
2-(2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-2-(5-methyl-7-oxo-1,2,5,7-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)acetic Acid
2-(2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamido)-2-(5-methyl-7-oxo-1,2,5,7-tetrahydro-4H-furo[3,4-d][1,3]thiazin-2-yl)acetic Acid
Catalogue No.:PA 03 0891004
CAS :
178422-42-9
Molecular Formula : C14H15N5O6S2
Molecular Weight : 413.42
