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Pharmaceutical Impurity Reference Standards

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Structure Chemical Name CAS MF
Trimethoprim Related Compound B (25 mg) (2,4-diaminopyrimidin-5-yl)(3,4,5-trimethoxyphenyl)methanone) (AS) Trimethoprim Related Compound B (25 mg) (2,4-diaminopyrimidin-5-yl)(3,4,5-trimethoxyphenyl)methanone) (AS) 30806-86-1 C14H16N4O4
Fosinopril Related Compound D Fosinopril Related Compound D 1356353-41-7 C30H47NNaO7P
1-[(2S)-3-BroMo-2-Methyl-1-oxopropyl]-L-proline 1-[(2S)-3-BroMo-2-Methyl-1-oxopropyl]-L-proline 80629-35-2 C9H14BrNO3
Proguanil Related Compound C (25 mg) (1,5-bis(4-chlorophenyl)biguanide hydrochloride) Proguanil Related Compound C (25 mg) (1,5-bis(4-chlorophenyl)biguanide hydrochloride) 13590-98-2 C14H14Cl3N5
[2S-[1[R*(R*)],2α,3aβ,6aβ]]-1-[2-[[3-Cyclohexyl-1-(ethoxycarbonyl)propyl]aMino]-1-oxoprop [2S-[1[R*(R*)],2α,3aβ,6aβ]]-1-[2-[[3-Cyclohexyl-1-(ethoxycarbonyl)propyl]aMino]-1-oxoprop 99742-35-5 C23H38N2O5
rac N-Desisopropyl-N-ethyl Acebutolol rac N-Desisopropyl-N-ethyl Acebutolol 441019-91-6 C17H26N2O4
Citalopram Related Compound H (25 mg) (1-(4'-fluorophenyl)-1-(3-dimethylaminopropyl)-5-bromophthalane hydrobromide) Citalopram Related Compound H (25 mg) (1-(4'-fluorophenyl)-1-(3-dimethylaminopropyl)-5-bromophthalane hydrobromide) 479065-02-6 C19H22Br2FNO
Propafenone Related Compound B ((2E)-1-[2-[(2RS)-2-hydroxy-3-(propylamino)propoxy]phenyl]-3-phenylprop-2-en-1-one) Propafenone Related Compound B ((2E)-1-[2-[(2RS)-2-hydroxy-3-(propylamino)propoxy]phenyl]-3-phenylprop-2-en-1-one) 88308-22-9 C21H25NO3
N-Succinyl-L-tyrosine N-Succinyl-L-tyrosine 374816-32-7 C13H15NO6
Ticabesone Propionate Ticabesone Propionate 73205-13-7 C25H32F2O5S
OXALIPLATIN IMPURITY B OXALIPLATIN IMPURITY B
PYRANTEL IMPURITY A PYRANTEL IMPURITY A 36700-38-6 C11H14N2S
N-Des(cyclohexylaMinocarbonyl) Glipizide N-Des(cyclohexylaMinocarbonyl) Glipizide 1346600-54-1 C14H16N4O3S
estra-1,3,5(10)-triene-3,17beta-diol 17-butyrate estra-1,3,5(10)-triene-3,17beta-diol 17-butyrate 18069-79-9 C22H30O3
2-[(1,1-DIMETHYLETHYL) AMINO]-1-[4-OH-3-(HYDROXYMETHYL)PHENYL]ETHAN-1-ONE 2-[(1,1-DIMETHYLETHYL) AMINO]-1-[4-OH-3-(HYDROXYMETHYL)PHENYL]ETHAN-1-ONE 156547-62-5 C13H19NO3
Citalopram Related Compound B Citalopram Related Compound B 1332724-03-4 C22H23FN2O6
Fosinopril Related Compound C Fosinopril Related Compound C
INSULIN ASPART INSULIN ASPART 116094-23-6 C256H381N65O79S6
METHYL 6-CHLORO-1H-BENZO[D]IMIDAZOL-2-YLCARBAMATE METHYL 6-CHLORO-1H-BENZO[D]IMIDAZOL-2-YLCARBAMATE 20367-38-8 C9H8ClN3O2
1-(3,4-dihydroxyphenyl)-2-[(1-methylethyl)amino] hydrochloride 1-(3,4-dihydroxyphenyl)-2-[(1-methylethyl)amino] hydrochloride 16899-81-3 C11H15NO3.ClH
Talampicillin hydrochloride Talampicillin hydrochloride 39878-70-1 C24H23N3O6S.ClH
[3-[2-(diMethylaMino)ethyl]-2-[[3-[2-(diMethylaMino)ethyl]-1H-indol-5-yl]Methyl]-1H-indol-5-yl]-N-MethylMethanesulfonaMide, succinate salt [3-[2-(diMethylaMino)ethyl]-2-[[3-[2-(diMethylaMino)ethyl]-1H-indol-5-yl]Methyl]-1H-indol-5-yl]-N-MethylMethanesulfonaMide, succinate salt 545338-89-4 C27H37N5O2S
Meta-Fexofenadine Meta-Fexofenadine 479035-75-1 C32H39NO4
4H-IMIDAZO[1,5-A][1,4]BENZODIAZEPINE-3-CARBOXYLIC ACID, 8-FLUORO-5,6-DIHYDRO-5-METHYL-6-OXO- 4H-IMIDAZO[1,5-A][1,4]BENZODIAZEPINE-3-CARBOXYLIC ACID, 8-FLUORO-5,6-DIHYDRO-5-METHYL-6-OXO- 84378-44-9 C13H10FN3O3
TINIDAZOLE RELATED COMPOUND B (20 MG) (1-(2-ETHYL-SULFONYLETHYL)-2-METHYL-4-NITROIMIDAZOLE) TINIDAZOLE RELATED COMPOUND B (20 MG) (1-(2-ETHYL-SULFONYLETHYL)-2-METHYL-4-NITROIMIDAZOLE) 25459-12-5 C8H13N3O4S
DIAZEPAM RELATED COMPOUND B (25 MG) (3-AMINO-6-CHLORO-1-METHYL-4-PHENYLCARBOSTYRIL) DIAZEPAM RELATED COMPOUND B (25 MG) (3-AMINO-6-CHLORO-1-METHYL-4-PHENYLCARBOSTYRIL) 5220-02-0 C16H13ClN2O
10-Formylfolic Acid 10-Formylfolic Acid 134-05-4 C20H19N7O7
BUPIVACAINE IMPURITY B BUPIVACAINE IMPURITY B
Dextranomer Dextranomer 56087-11-7 C41H68O30X4
Fosinopril Related Compound E Fosinopril Related Compound E
Platinum, (1,2-cyclohexanediamine-N,N')dinitrato-,(sp-4-2, 1R-trans)- Platinum, (1,2-cyclohexanediamine-N,N')dinitrato-,(sp-4-2, 1R-trans)- 66900-68-3 C6H12N4O6Pt
Lisinopril Cyclohexyl Analog Lisinopril Cyclohexyl Analog 1132650-67-9 C21H37N3O5
Proguanil Related Compound D (25 mg) (1,5-bis(1-methylethyl)biguanide hydrochloride) Proguanil Related Compound D (25 mg) (1,5-bis(1-methylethyl)biguanide hydrochloride) 35708-82-8 C8H20ClN5
Propoxyphene Related Compound B (50 mg) (alpha-d-2-Acetoxy-4-dimethylamino-1,2-diphenyl-3-methylbutane) Propoxyphene Related Compound B (50 mg) (alpha-d-2-Acetoxy-4-dimethylamino-1,2-diphenyl-3-methylbutane) 53990-51-5 C21H27NO2
Trospium Chloride Related Compound C Trospium Chloride Related Compound C 3464-71-9 C16H15ClO2
cis-Atovaquone cis-Atovaquone 137732-39-9 C22H19ClO3
MAIZE POWDER MA 1.0 IRMM CERTIFIED RE-F MAIZE POWDER MA 1.0 IRMM CERTIFIED RE-F 68525-86-0
KETAMINE RELATED COMPOUND A (50 MG) (1 -[(2-CHLOROPHENYL)(METHYLIMINO)METHYL]CYLCOPENTA-NOL) KETAMINE RELATED COMPOUND A (50 MG) (1 -[(2-CHLOROPHENYL)(METHYLIMINO)METHYL]CYLCOPENTA-NOL) 6740-87-0 C13H16ClNO
2-Naphthacenecarboxamide, 4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-, monohydrochloride, [4S-(4alpha,4aalpha,5alpha,5aalpha,6beta,12aalpha)]- 2-Naphthacenecarboxamide, 4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,5,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-, monohydrochloride, [4S-(4alpha,4aalpha,5alpha,5aalpha,6beta,12aalpha)]- 41411-66-9 C22H25ClN2O8
GLUCOSAMINE SULFATE SODIUM CHLORIDE GLUCOSAMINE SULFATE SODIUM CHLORIDE 1296149-13-7 C6H15ClNNaO9S
Δ2-Cefuroxime Axetil Δ2-Cefuroxime Axetil 123458-61-7 C20H22N4O10S
Flavoxate Related Compound C (20 mg) (3-Methylflavone-8-carboxylic acid ethyl ester) Flavoxate Related Compound C (20 mg) (3-Methylflavone-8-carboxylic acid ethyl ester) 35888-94-9 C19H16O4
Dalasetron (Mesylate hydrate) Dalasetron (Mesylate hydrate) 878143-33-0 C20H24N2O6S
TICLOPIDINE IMPURITY F TICLOPIDINE IMPURITY F 62019-75-4 C14H14ClNS
(endo,anti)-(±)-3-(3-hydroxy-1-oxo-2-phenylpropoxy)-8-isopropyl-8-methyl-8-azoniabicyclo[3.2.1]octane bromide (endo,anti)-(±)-3-(3-hydroxy-1-oxo-2-phenylpropoxy)-8-isopropyl-8-methyl-8-azoniabicyclo[3.2.1]octane bromide 58073-59-9 C20H30BrNO3
(±)-N-[3-acetyl-4-[2-hydroxy-3-[(1-methylethyl)amino]propoxy]phenyl]acetamide (±)-N-[3-acetyl-4-[2-hydroxy-3-[(1-methylethyl)amino]propoxy]phenyl]acetamide 22568-64-5 C16H24N2O4
alpha-Methyl-4-biphenylacetic acid alpha-Methyl-4-biphenylacetic acid 6341-72-6 C15H14O2
Zinc acexamate Zinc acexamate 70020-71-2 C16H28N2O6Zn
(R)-2-(2-OXO-PYRROLIDIN-1-YL)-BUTYRAMIDE (R)-2-(2-OXO-PYRROLIDIN-1-YL)-BUTYRAMIDE 103765-01-1 C8H14N2O2
Olopatadine N-Oxide Olopatadine N-Oxide 203188-31-2 C21H23NO4
INDINAVIR (100 MG)F0D3080.971MG/MG(AI) INDINAVIR (100 MG)F0D3080.971MG/MG(AI) 180683-37-8 C36H49N5O5
BUPIVACAINE IMPURITY E BUPIVACAINE IMPURITY E
FENTICONAZOLE IMPURITY D FENTICONAZOLE IMPURITY D
HYOSCINE BUTYLBROMIDE IMPURITY E HYOSCINE BUTYLBROMIDE IMPURITY E
ZINC-64 ZINC-64 Zn
ALLOPURINOL IMPURITY A ALLOPURINOL IMPURITY A C5H4N4O
FLUMAZENIL - REFERENCE SPECTRUM FLUMAZENIL - REFERENCE SPECTRUM
IFOSFAMIDE IMPURITY B IFOSFAMIDE IMPURITY B 241482-18-8 C10H24Cl2N2O7P2
3-[(2,2-dimethoxyethyl)thio]propene 3-[(2,2-dimethoxyethyl)thio]propene 84522-35-0 C7H14O2S
Lamivudine Resolution Mixture B Lamivudine Resolution Mixture B
Vancomycin B with Monodechlorovancomycin Vancomycin B with Monodechlorovancomycin
137234-62-9 137234-62-9 137234-62-9 C16H14F3N5O
Iron-57Fe solution Iron-57Fe solution Fe
Rubidium-85Rb solution Rubidium-85Rb solution Rb
Boric acid (isotope ratio) Boric acid (isotope ratio)
Cefadroxil Related CoMpound I Cefadroxil Related CoMpound I 147103-94-4 C16H17N3O5S
Cefprozil Related CoMpound H Cefprozil Related CoMpound H
CALCIUM ASCORBATE - REFERENCE SPECTRUM CALCIUM ASCORBATE - REFERENCE SPECTRUM
TICARCILLIN IMPURITY A TICARCILLIN IMPURITY A 6933-26-2 C13H12OS
TRIMETHOPRIM IMPURITY B TRIMETHOPRIM IMPURITY B
TRAMADOL IMPURITY A TRAMADOL IMPURITY A C16H25NO2
TYLOSIN PHOSPHATE FOR PEAK IDENTIFICATION TYLOSIN PHOSPHATE FOR PEAK IDENTIFICATION
CEFACLOR, DELTA-3-ISOMER (30 MG) CEFACLOR, DELTA-3-ISOMER (30 MG) 152575-13-8 C15H14ClN3O4S
(9Z,12Z)-octadeca-9,12-dienoic acid, monoester with glycerol (9Z,12Z)-octadeca-9,12-dienoic acid, monoester with glycerol 26545-74-4 C21H38O4
Cefoperazone dihydrate Cefoperazone dihydrate 113826-44-1 C25H29N9O9S2
D-Phenylalanine, N-[[4-(1-methylethyl)cyclohexyl]carbonyl]-, cis- D-Phenylalanine, N-[[4-(1-methylethyl)cyclohexyl]carbonyl]-, cis- 105816-06-6 C19H27NO3
N-isopropyltropinium N-isopropyltropinium 58005-18-8 C11H22BrNO
GMO Standard ERM-BF412, Maize Bt-11 GMO Standard ERM-BF412, Maize Bt-11
Iron-56Fe solution Iron-56Fe solution Fe
67392-87-4 67392-87-4 67392-87-4
Temazepam Related Compound G (15 mg) (7-Chloro-1,4-dimethyl-5-phenyl-4,5-dihydro-1H-1,4-benzodiazepine-2,3-dione) Temazepam Related Compound G (15 mg) (7-Chloro-1,4-dimethyl-5-phenyl-4,5-dihydro-1H-1,4-benzodiazepine-2,3-dione) 93329-92-1 C17H15ClN2O2
(2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid (2S)-1-[2-Methylpropanoyl]-pyrrolidine-2-carboxylic Acid 23500-15-4 C9H15NO3
(S)-1-(3-((ethyl(methyl)carbamoyl)oxy)phenyl)-N,N-dimethylethanamine (S)-1-(3-((ethyl(methyl)carbamoyl)oxy)phenyl)-N,N-dimethylethanamine 415973-05-6 C14H22N2O2
1-Methyl-2-(Methylthio)iMidazole 1-Methyl-2-(Methylthio)iMidazole 14486-52-3 C5H8N2S
MetaMizole iMpurity E MetaMizole iMpurity E
Abacavir Related CoMpound B Abacavir Related CoMpound B
GalantaMine HydrobroMide Related CoMpounds Mixture GalantaMine HydrobroMide Related CoMpounds Mixture
Ranitidine Resolution Mixture Ranitidine Resolution Mixture C13H22N4O3S
Flutrimazole carbinol Flutrimazole carbinol 128092-72-8 C19H14F2O
WARFARIN RELATED COMPOUND A (50 MG) (3-(O-HYDROXYPHENYL)-5-PHENYL-2-CYCLOHEXEN-1-ONE) WARFARIN RELATED COMPOUND A (50 MG) (3-(O-HYDROXYPHENYL)-5-PHENYL-2-CYCLOHEXEN-1-ONE) 37209-23-7
ERYTHROMYCIN B ERYTHROMYCIN B 527-75-3 C37H67NO12
ENDOTOXIN STANDARD ENDOTOXIN STANDARD
HYDROUS BENZOYL PEROXIDE - REFERENCE SPECTRUM HYDROUS BENZOYL PEROXIDE - REFERENCE SPECTRUM
HEPARIN LOW-MOLECULAR-MASS FOR CALIBRATION CRS HEPARIN LOW-MOLECULAR-MASS FOR CALIBRATION CRS
OXYTOCIN/DESMOPRESSIN VALIDATION MIXTURE OXYTOCIN/DESMOPRESSIN VALIDATION MIXTURE
POTASSIUM CLAVULANATE - REFERENCE SPECTRUM POTASSIUM CLAVULANATE - REFERENCE SPECTRUM
OXALIPLATIN IMPURITY D OXALIPLATIN IMPURITY D
ESTRADIOL FOR PEAK IDENTIFICATION ESTRADIOL FOR PEAK IDENTIFICATION C18H24O2
6alpha-fluoro-11beta,21-dihydroxy-16alpha-methylpregna-1,4-diene-3,20-dione 21-pivalate 6alpha-fluoro-11beta,21-dihydroxy-16alpha-methylpregna-1,4-diene-3,20-dione 21-pivalate 29205-06-9 C27H37FO5
82999, 237NpO2 (V encapsulated) 82999, 237NpO2 (V encapsulated) 58670-16-9 NpO2
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