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
Cefdinir
Catalogue No.:PA 03 89000
CAS :
Molecular Formula : C14H13N5O5S2
Molecular Weight : 395.41
Thiazolyacetyl Glycine Oxime
Catalogue No.:PA 03 89520
Molecular Formula : C7H8N4O4S
Molecular Weight : 244.23
Thiazolylacetyl Glycine Oxime Acetal
Catalogue No.:PA 03 89530
Molecular Formula : C7H10N4O4S
Molecular Weight : 246.24
3-Methyl Cefdinir
Catalogue No.:PA 03 89540
Molecular Formula : C13H13N5O5S2
Molecular Weight : 383.41
E-Cefdinir
Catalogue No.:PA 03 89570
Cefdinir Decarboxy Open Ring (Mixture of Diastereomers)
Catalogue No.:PA 03 89580
Molecular Formula : C13H15N5O4S2
Molecular Weight : 369.42
(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
Molecular Formula : C14H14N4O4S2
Molecular Weight : 366.42
Cefdinir 7-isomer
Catalogue No.:PA 03 89620
Cefdinir Glyoxalic Analog
Catalogue No.:PA 03 89630
Molecular Formula : C14H12N4O5S2
Molecular Weight : 380.4
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
Molecular Formula : C14H15N5O6S2
Molecular Weight : 413.43
Cefdinir Lactone
Catalogue No.:PA 03 89550
Cefdinir Isoxazole Analog
Catalogue No.:PA 03 89560
Molecular Formula : C13H11N3O6S
Molecular Weight : 337.31
Cefdinir Sulfoxide
Catalogue No.:PA 03 89600
Molecular Formula : C14H13N5O6S2
Molecular Weight : 411.41
Cefdinir Thiazine Analog
Catalogue No.:PA 03 89610
Cefdinir Open-Ring Lactone Sodium Salt
Catalogue No.:PA 03 89640
Molecular Formula : C14H14N5NaO6S2
Molecular Weight : 435.41
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
(Z)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetamide
Catalogue No.:PA 03 89660
Molecular Formula : C5H6N4O2S
Molecular Weight : 186.19
Cefdinir-15N2,13C
Catalogue No.:PA STI 018330
Molecular Formula : C1313CH13N315N2O5S2
Molecular Weight : 398.39
Cefdinir Related Compound A (2(R)-2-[(Z)-2-(2-aminothiazol-4-yl)-2-(hydroxyimino)acetamido]-2-[(2RS (1097625)
Catalogue No.:PA USP1097625
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)
Catalogue No.:PA USP1097589
Cefdinir (1097614)
Catalogue No.:PA USP1097614
(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
(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
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
Catalogue No.:PA 03 89690
O-Acetyl Cefdinir
Catalogue No.:PA 03 89700
Molecular Formula : C16H15N5O6S2
Molecular Weight : 437.45
(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
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
Catalogue No.:PA 03 89720
Cefdinir Thiazene Amide Analog
Catalogue No.:PA 03 89730
Molecular Formula : C14H16N6O5S2
Molecular Weight : 412.44
(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
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
Catalogue No.:PA 03 89750
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
Catalogue No.:PA 03 89760
Molecular Formula : C17H16N2O4S
Molecular Weight : 344.39
tert-Butyl (Z)-2-(hydroxyimino)-3-oxobutanoate
Catalogue No.:PA 03 89770
Molecular Formula : C8H13NO4
Molecular Weight : 187.2
tert-Butyl (Z)-2-((2-methoxy-2-oxoethoxy)imino)-3-oxobutanoate
Catalogue No.:PA 03 89780
Molecular Formula : C11H17NO6
Molecular Weight : 259.26
(Z)-4-Chloro-2-((2-methoxy-2-oxoethoxy)imino)-3-oxobutanoic Acid
Catalogue No.:PA 03 89790
Molecular Formula : C7H8ClNO6
Molecular Weight : 237.59
(E)-2-(Trityloxyimino)-2-[2-(tritylamino)thiazol-4-yl]acetic Acid
Catalogue No.:PA 03 89800
Molecular Formula : C43H33N3O3S
Molecular Weight : 671.81
(Z)-2-(Trityloxyimino)-2-[2-(tritylamino)thiazol-4-yl]acetic Acid
Catalogue No.:PA 03 89810
(Z)-2-[2-(Tritylamino)thiazol-4-yl]-2-(trityloxyimino)acetic Acid Ethyl Ester
Catalogue No.:PA 03 89820
Molecular Formula : C45H37N3O3S
Molecular Weight : 699.86
Ethyl (Z)-2-(2-aminothiazol-4-yl)-2-((trityloxy)imino)acetate
Catalogue No.:PAI 03 030010
Molecular Formula : C26H23N3O3S
Molecular Weight : 457.55
(Z)-2-(2-Aminothiazol-4-yl)-2-((trityloxy)imino)acetic Acid
Catalogue No.:PAI 03 030020
Molecular Formula : C24H19N3O3S
Molecular Weight : 429.49
(Z)-(2-(2-Aminothiazol-4-yl)-2-((trityloxy)imino)acetyl)glycine
Catalogue No.:PAI 03 030030
Molecular Formula : C26H22N4O4S
Molecular Weight : 486.55
Ethyl (Z)-(2-(2-aminothiazol-4-yl)-2-((trityloxy)imino)acetyl)glycinate
Catalogue No.:PAI 03 030040
Molecular Formula : C28H26N4O4S
Molecular Weight : 514.60
(Z)-2-(2-Aminothiazol-4-yl)-N-(2,2-dihydroxyethyl)-2-((trityloxy)imino)acetamide
Catalogue No.:PAI 03 030050
Molecular Formula : C26H24N4O4S
Molecular Weight : 488.56
(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
Molecular Formula : C32H27N5O5S2
Molecular Weight : 625.72
(E)-2-(2-Aminothiazol-4-yl)-2-(hydroxyimino)acetic Acid
Catalogue No.:PAI 03 030070
Molecular Formula : C5H5N3O3S
Molecular Weight : 187.17
(E)-2-(2-Aminothiazol-4-yl)-2-((trityloxy)imino)acetic acid
Catalogue No.:PAI 03 030080
(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
Molecular Formula : C33H27N5O5S2
Molecular Weight : 637.73
(Z)-2-(Acetoxyimino)-2-(2-aminothiazol-4-yl)acetic acid
Catalogue No.:PAI 03 030100
Molecular Formula : C7H7N3O4S
Molecular Weight : 229.21
(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
Molecular Formula : C15H15N5O6S2
Molecular Weight : 425.43
(E)-2-(Acetoxyimino)-2-(2-aminothiazol-4-yl)acetic acid
Catalogue No.:PAI 03 030120
(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
Ethyl 4-Bromoacetoacetate
Catalogue No.:PAI 03 030140
Molecular Formula : C6H9BrO3
Molecular Weight : 209.04
Ethyl (Z)-4-bromo-2-(hydroxyimino)-3-oxobutanoate
Catalogue No.:PAI 03 030150
Molecular Formula : C6H8BrNO4
Molecular Weight : 238.04
Ethyl 4-hydroxyisoxazole-3-carboxylate
Catalogue No.:PAI 03 030160
Molecular Formula : C6H7NO4
Molecular Weight : 157.13
Ethyl 4-(trityloxy)isoxazole-3-carboxylate
Catalogue No.:PAI 03 030170
Molecular Formula : C25H21NO4
Molecular Weight : 399.45
4-(Trityloxy)isoxazole-3-carboxylic Acid
Catalogue No.:PAI 03 030180
Molecular Formula : C23H17NO4
Molecular Weight : 371.39
(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
Molecular Formula : C32H25N3O6S
Molecular Weight : 579.63
4-Hydroxyisoxazole-3-carboxylic Acid
Catalogue No.:PAI 03 030200
Molecular Formula : C4H3NO4
Molecular Weight : 129.07
4-Hydroxyisoxazole-3-carbonyl chloride Hydrochloride
Catalogue No.:PAI 03 030210
Molecular Formula : C4H3Cl2NO3
Molecular Weight : 183.97
(Z)-2-(2-Aminothiazol-4-yl)-3-(benzo[d]thiazol-2-ylthio)-3-oxoprop-1-en-1-yl Acetate
Catalogue No.:PAI 03 030221
Molecular Formula : C15H11N3O3S3
Molecular Weight : 377.45
(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
Molecular Formula : C25H23N7O8S3
Molecular Weight : 645.68
(Z)-2-Methoxyimino-3-oxobutyric acid, 1,1-dimethylethyl Ester,
Catalogue No.:PAI 03 030220
Molecular Formula : C9H15NO4
Molecular Weight : 201.22
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
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
Catalogue No.:PAI 03 030224
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
Catalogue No.:PAI 03 030225
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
Catalogue No.:PAI 03 030226
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
Catalogue No.:PAI 03 030227
Molecular Formula : C21H19N3O7S
Molecular Weight : 457.46
Ethyl (E)-4-chloro-2-(hydroxyimino)-3-oxobutanoate
Catalogue No.:PAI 03 030228
Molecular Formula : C6H8ClNO4
Molecular Weight : 193.58
Ethyl 4-((4-methoxybenzyl)oxy)isoxazole-3-carboxylate
Catalogue No.:PAI 03 030229
Molecular Formula : C14H15NO5
Molecular Weight : 277.28
4-((4-Methoxybenzyl)oxy)isoxazole-3-carboxylic Acid
Catalogue No.:PAI 03 030230
Molecular Formula : C12H11NO5
Molecular Weight : 249.22
Sodium (Z)-2-(2-aminothiazol-4-yl)-2-(hydroxyimino)acetate
Catalogue No.:PAI 03 030231
Molecular Formula : C5H4N3NaO3S
Molecular Weight : 209.15
Sodium (Z)-2-(acetoxyimino)-2-(2-aminothiazol-4-yl)acetate
Catalogue No.:PAI 03 030232
Molecular Formula : C7H6N3NaO4S
Molecular Weight : 251.19
S-(Benzo[d]thiazol-2-yl) (Z)-2-(acetoxyimino)-2-(2-aminothiazol-4-yl)ethanethioate
Catalogue No.:PAI 03 030233
Molecular Formula : C14H10N4O3S3
Molecular Weight : 378.44
(Z)-(2-(Acetoxyimino)-2-(2-aminothiazol-4-yl)acetyl)glycine
Catalogue No.:PAI 03 030234
Molecular Formula : C9H10N4O5S
Molecular Weight : 286.26
Δ3-Cefdinir
Catalogue No.:PA 03 0891001
(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
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)
Catalogue No.:PA 03 0891003
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
Catalogue No.:PAI 03 030235
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
Catalogue No.:PAI 03 030236
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
Catalogue No.:PAI 03 030237
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
Catalogue No.:PAI 03 030238
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
Catalogue No.:PAI 03 030239
Molecular Formula : C28H34O5
Molecular Weight : 450.58
2-(2-Aminothiazol-4-yl)acetyl chloride
Catalogue No.:PAI 03 030240
Molecular Formula : C5H5ClN2OS
Molecular Weight : 176.62
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
Molecular Formula : C17H22N4O4S2Si
Molecular Weight : 438.59
2-(2-Aminothiazol-4-yl)-2-oxoacetic acid;
Catalogue No.:PAI 03 030242
Molecular Formula : C5H4N2O3S
Molecular Weight : 172.16
2-(2-aminothiazol-4-yl)-2-oxoacetyl chloride
Catalogue No.:PAI 03 030243
Molecular Formula : C5H3ClN2O2S
Molecular Weight : 190.6
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
Molecular Formula : C17H20N4O5S2Si
Molecular Weight : 452.58
N-Acetyl Cefdinir
Catalogue No.:PA 03 0891000
tert-Butyl (4-(2-((2,2-diethoxyethyl)amino)-2-oxoacetyl)thiazol-2-yl)carbamate
Catalogue No.:PAI 03 030245
Molecular Formula : C16H25N3O6S
Molecular Weight : 387.45
tert-Butyl (Z)-(4-(2-((2,2-diethoxyethyl)amino)-1-(hydroxyimino)-2-oxoethyl)thiazol-2-yl)carbamate
Catalogue No.:PAI 03 030246
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
Catalogue No.:PA 03 0891004
4-Chloroisoxazole-3-carboxylic Acid
Catalogue No.:PAI 03 030247
Molecular Formula : C4H2ClNO3
Molecular Weight : 147.51
S-(Benzo[d]thiazol-2-yl) 4-hydroxyisoxazole-3-carbothioate
Catalogue No.:PAI 03 030248
Molecular Formula : C11H6N2O3S2
Molecular Weight : 278.3
Ethyl 4-((tert-butyldimethylsilyl)oxy)isoxazole-3-carboxylate
Catalogue No.:PAI 03 030249
Molecular Formula : C12H21NO4Si
Molecular Weight : 271.39
2-(2-Aminothiazol-5-yl)-N-(2,2-dihydroxyethyl)-2-oxoacetamide
Catalogue No.:PAI 03 030250
Molecular Formula : C7H9N3O4S
Molecular Weight : 231.23
2-(2-Aminothiazol-5-yl)-N-(2,2-diethoxyethyl)-2-oxoacetamide
Catalogue No.:PAI 03 030251
Molecular Formula : C11H17N3O4S
Molecular Weight : 287.33
(E)-2-(2-Aminothiazol-5-yl)-N-(2,2-diethoxyethyl)-2-(hydroxyimino)acetamide
Catalogue No.:PAI 03 030252
Molecular Formula : C11H18N4O4S
Molecular Weight : 302.35
Methyl 2-(2-aminothiazol-4-yl)acetate
Catalogue No.:PAI 03 030253
Molecular Formula : C6H8N2O2S
Molecular Weight : 172.2
Methyl 2-(2-((tert-butoxycarbonyl)amino)thiazol-4-yl)acetate
Catalogue No.:PAI 03 030254
Molecular Formula : C11H16N2O4S
Molecular Weight : 272.32
2-(2-((tert-Butoxycarbonyl)amino)thiazol-4-yl)acetic Acid
Catalogue No.:PAI 03 030255
Molecular Formula : C10H14N2O4S
Molecular Weight : 258.29
2-(2-((tert-Butoxycarbonyl)amino)thiazol-4-yl)acetic Pivalic Anhydride
Catalogue No.:PAI 03 030256
Molecular Formula : C15H22N2O5S
Molecular Weight : 342.41
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