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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

1527 products found

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USP-1A03940

N-Nitrosomethylphenidate (NMPH) Solution (1 mg/mL in Methanol) (Methyl 2-(1-nitrosopiperidin-2-yl)-2-phenylacetate)

Item no.

USP-1A03940

CAS Number

[55557-03-4]

Unit

1 mL

Molecular formula

C14H18N2O3

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USP-1A04540

1-Methoxy Empagliflozin ((2S,3R,4S,5S,6R)-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-6-(hydroxymethyl)-2-methoxytetrahydro-2H-pyran-3,4,5-triol)

Item no.

USP-1A04540

CAS Number

[1279691-36-9]

Unit

25 mg

Molecular formula

C24H29ClO8

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USP-1A05810

Levetiracetam acid (COLD SHIPMENT REQUIRED) ((S)-2-(2-oxopyrrolidin-1-yl)butanoic acid)

Item no.

USP-1A05810

CAS Number

[102849-49-0]

Unit

25 mg

Molecular formula

C8H13NO3

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USP-1A06370

Isopropyl Diphenylphosphorylpentanoate (Isopropyl 5-(Diphenylphosphinyl)pentanoic acid)

Item no.

USP-1A06370

CAS Number

[2088449-88-9]

Unit

25 mg

Molecular formula

C20H25O3P

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USP-1A06590

Phenothiazine sulfoxide (5-Oxophenothiazine)

Item no.

USP-1A06590

CAS Number

[1207-71-2]

Unit

25 mg

Molecular formula

C12H9NOS

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USP-1A07180

Olanzapine Open Ring Analog (3-(hydroxymethylene)-4-(4-methylpiperazin-1-yl)-1,3-dihydro-2H-benzo[b][1,4]diazepine-2-thione)

Item no.

USP-1A07180

Unit

25 mg

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USP-1A07640

Galantamine N-Oxide ((4aS,6R,8aS)-6-Hydroxy-3-methoxy-11-methyl-4a,5,9,10,11,12-hexahydro-6H-benzo[2,3]benzofuro[4,3-cd]azepine 11-oxide)

Item no.

USP-1A07640

CAS Number

[199014-26-1]

Unit

25 mg

Molecular formula

C17H21NO4

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USP-1A08800

N-Nitroso Desmethyl Rizatriptan Solution (1 mg/mL in Methanol) (N-(2-(5-((1H-1,2,4-triazol-1-yl)methyl)-1H-indol-3-yl)ethyl)-N-methylnitrous amide)

Item no.

USP-1A08800

Unit

1 mL

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USP-1A08860

N-Nitroso Folic Acid Solution (1 mg/mL in Dimethyl sulfoxide) ((4-(((2-amino-4-oxo-3,4-dihydropteridin-6-yl)methyl)(nitroso)amino)benzoyl)-L-glutamic acid)

Item no.

USP-1A08860

Unit

1 mL

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USP-1A08870

N-Nitroso Acebutolol Solution (1 mg/mL in Methanol) (N-(3-acetyl-4-(2-hydroxy-3-(isopropyl(nitroso)amino)propoxy)phenyl)butyramide)

Item no.

USP-1A08870

Unit

1 mL

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USP-1A08960

N-Nitroso N-Desmethyl Tamoxifen Solution (1 mg/mL in Methanol) ((Z)-N-(2-(4-(1,2-diphenylbut-1-en-1-yl)phenoxy)ethyl)-N-methylnitrous amide)

Item no.

USP-1A08960

Unit

1 mL

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USP-1A09010

N-Nitroso N-Desmethyl Trimethobenzamide Solution (1 mg/mL in Methanol) (3,4,5-trimethoxy-N-(4-(2-(methyl(nitroso)amino)ethoxy)benzyl)benzamide)

Item no.

USP-1A09010

Unit

1 mL

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USP-1A09280

N-Nitroso Mitoxantrone Formate Solution (1 mg/mL in Methanol) (N-(2-{[5,8-Dihydroxy-4-({2-[(2-hydroxyethyl)amino]ethyl}amino)-9,10-dioxo-9,10-dihydroanthracen-1-yl]amino}ethyl)-N-(2-hydroxyethyl)nitrous amide formate)

Item no.

USP-1A09280

Unit

1 mL

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USP-1A09390

N-Nitroso N-Desmethyl Cabergoline Solution (1 mg/mL in Dimethyl sulfoxide) ((6aR,9R,10aR)-7-allyl-N-(ethylcarbamoyl)-N-(3-(methyl(nitroso)amino)propyl)-4,6,6a,7,8,9,10,10a-octahydroindolo[4,3-fg]quinoline-9-carboxamide)

Item no.

USP-1A09390

Unit

1 mL

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USP-1A09540

N-Nitroso N-Desmethyl Nizatidine Solution (1 mg/mL in Methanol) (N-Methyl-N-((4-(((2-((1-(methylamino)-2-nitrovinyl)amino)ethyl)thio)methyl)thiazol-2-yl)methyl)nitrous amide)

Item no.

USP-1A09540

Unit

1 mL

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USP-1A09680

N-Nitroso Desmethyl Carbinoxamine Solution (1 mg/mL in Methanol) (N-(2-((4-Chlorophenyl)(pyridin-2-yl)methoxy)ethyl)-N-methylnitrous amide)

Item no.

USP-1A09680

Unit

1 mL

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USP-1A09740

N-Nitroso Desmethyl Citalopram Solution (1 mg/mL in Methanol) (N-(3-[5-cyano-1-(4-fluorophenyl)-1,3-dihydroisobenzofuran-1-yl]propyl)-N-methylnitrous amide)

Item no.

USP-1A09740

Unit

1 mL

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USP-1A09890

N-Nitroso Lorcaserin Solution (1 mg/mL in Methanol) ((1R)-8-chloro-2,3,4,5-tetrahydro-1-methyl-3-nitroso-1H-3-benzazepine)

Item no.

USP-1A09890

Unit

1 mL

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USP-1A10340

(2R)-Vildagliptin ((R)-1-[N-(3-Hydroxyadamantan-1-yl)glycyl]-2-pyrrolidinecarbonitrile)

Item no.

USP-1A10340

CAS Number

[1036959-27-9]

Unit

25 mg

Molecular formula

C17H25N3O2

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USP-1A12020

(S,S,R)-Edoxaban (N1-(5-chloropyridin-2-yl)-N2-((1S,2S,4R)-4-(dimethylcarbamoyl)-2-(5-methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine-2-carboxamido)cyclohexyl)oxalamide)

Item no.

USP-1A12020

Unit

25 mg

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USP-1A12030

(1S,2S)-2-(3,4-Difluorophenyl)cyclopropan-1-amine hydrochloride ((1S,2S)-2-(3,4-difluorophenyl)cyclopropan-1-amine hydrochloride)

Item no.

USP-1A12030

Unit

25 mg

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USP-1A12040

Desmethyl Tolvaptan (N-(4-(7-chloro-5-hydroxy-2,3,4,5-tetrahydro-1H-benzo[b]azepine-1-carbonyl)-3-methylphenyl)benzamide)

Item no.

USP-1A12040

Unit

25 mg

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USP-1A12120

Desbenzonitrile (R,S)-Isavuconazole (rel-(2R,3S)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanethioamide)

Item no.

USP-1A12120

Unit

25 mg

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USP-1A12130

Desbenzonitrile (S,S)-Isavuconazole ((2S,3S)-3-(2,5-difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanethioamide)

Item no.

USP-1A12130

Unit

25 mg

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USP-1A12180

2-Bromo-5-nitroso-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine (2-bromo-5-nitroso-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine)

Item no.

USP-1A12180

Unit

25 mg

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USP-1A12200

2,3,6-Trifluoro Sitagliptin Phosphate (3-amino-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,3,6-trifluorophenyl)butan-1-one phosphate)

Item no.

USP-1A12200

Unit

25 mg

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USP-1A12260

5-Nitroso-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine-2-carboxylic Acid (5-nitroso-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine-2-carboxylic acid)

Item no.

USP-1A12260

Unit

25 mg

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USP-1A12860

Hydroxyethylphthalimide Linagliptin ((R)-N1-{1-[7-(But-2-yn-1-yl)-3-methyl-1-[(4-methylquinazolin-2-yl)methyl]-2,6-dioxo-2,3,6,7-tetrahydro-1H-purin-8-yl]piperidin-3-yl}-N2-(2-hydroxyethyl)phthalamide)

Item no.

USP-1A12860

Unit

10 mg

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USP-1A13540

Rilpivirine 2-Amide ((E)-4-{[4-{[4-(2-Cyanovinyl)-2,6-dimethylphenyl]amino}pyrimidin-2-yl]amino}benzamide)

Item no.

USP-1A13540

Unit

25 mg

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USP-1A15070

Lenalidomide Amide Methyl Ester (Methyl 5-amino-4-(4-amino-1-oxoisoindolin-2-yl)-5-oxopentanoate)

Item no.

USP-1A15070

Unit

25 mg

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USP-1A15160

Des-(3-(Pyridin-2-ylamino)propanoate) Dabigatran Ethyl Ester Hydrochloride (Ethyl 2-{[(4-carbamimidoylphenyl)amino]methyl}-1-methyl-1H-benzimidazole-5-carboxylate hydrochloride)

Item no.

USP-1A15160

Unit

25 mg

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USP-1A15260

Desglucosyl Empagliflozin 4,4'-Dimer ((3S,3'S)-3,3'-((((4,4'-Dichloro-[1,1'-biphenyl]-3,3'-diyl)bis(methylene))bis(4,1-phenylene))bis(oxy))bis(tetrahydrofuran))

Item no.

USP-1A15260

Unit

25 mg

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USP-1A15360

Descyclopropyl Lenvatinib Dimer Urea (4,4'-(((carbonylbis(azanediyl))bis(3-chloro-4,1-phenylene))bis(oxy))bis(7-methoxyquinoline-6-carboxamide))

Item no.

USP-1A15360

Unit

25 mg

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USP-1A15370

Descyclopropyl N-Methyl Lenvatinib (4-[3-Chloro-4-[[(methylamino)carbonyl]amino]phenoxy]-7-methoxy-6-quinolinecarboxamide)

Item no.

USP-1A15370

Unit

25 mg

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USP-1A16740

Depiperazine Depyridine Abemaciclib (4-fluoro-6-(5-fluoropyrimidin-4-yl)-1-isopropyl-2-methyl-1H-benzo[d]imidazole))

Item no.

USP-1A16740

Unit

25 mg

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USP-1A16950

Baricitinib 4-amino 5-carboxylic acid (4-amino-6-{1-[3-(cyanomethyl)-1-(ethanesulfonyl)azetidin-3-yl]-1H-pyrazol-4-yl}pyrimidine-5-carboxylic acid)

Item no.

USP-1A16950

Unit

25 mg

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USP-1A16960

Pyrrolopyrimidine Baricitinib (2-(3-(4-(7H-[4,7'-bipyrrolo[2,3-d]pyrimidin]-4'-yl)-1H-pyrazol-1-yl)-1-(ethylsulfonyl)azetidin-3-yl)acetonitrile)

Item no.

USP-1A16960

Unit

25 mg

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USP-1A17040

Desfluorophenylamine Cabozantinib Methyl Ester (methyl 1-((4-((6,7-dimethoxyquinolin-4-yl)oxy)phenyl)carbamoyl)cyclopropane-1-carboxylate)

Item no.

USP-1A17040

Unit

25 mg

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USP-1A17240

10-Morpholino Alectinib (9-Ethyl-6,6-dimethyl-10-(4-morpholinopiperidin-1-yl)-11-oxo-6,11-dihydro-5H-benzo[b]carbazole-3-carbonitrile)

Item no.

USP-1A17240

Unit

25 mg

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USP-1A17430

Momelotinib Open Ring Alchohol (N-(cyanomethyl)-4-(2-((4-((2-hydroxyethyl)amino)phenyl)amino)pyrimidin-4-yl)benzamide)

Item no.

USP-1A17430

Unit

25 mg

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USP-1A18510

N-Methyl Amisulpride (4-Amino-N-[(1-ethylpyrrolidin-2-yl)methyl]-5-(ethylsulfonyl)-2-methoxy-N-methylbenzamide)

Item no.

USP-1A18510

Unit

25 mg

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USP-1A18540

Isopropenyl Olmesartan Medoxomil ((5-Methyl-2-oxo-1,3-dioxol-4-yl)methyl 1-{[2'-(1H-tetrazol-5-yl)biphenyl-4-yl]methyl}-4-(prop-1-en-2-yl)-2-propyl-1H-imidazole-5-carboxylate)

Item no.

USP-1A18540

Unit

25 mg

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USP-1A19650

Desbenzothiophene Brexpiprazole (7-[4-(1-Piperazinyl)butoxy]-2(1H)-quinolinone)

Item no.

USP-1A19650

Unit

25 mg

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USP-1A19690

Formyl Dasatinib (N-(2-Chloro-6-methylphenyl)-2-{[6-(4-formyl-1-piperazinyl)-2-methyl-4-pyrimidinyl]amino}-1,3-thiazole-5-carboxamide)

Item no.

USP-1A19690

Unit

25 mg

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USP-1A19720

Dasatinib Ethyl Carbamate (Ethyl 4-[6-({5-[(2-chloro-6-methylphenyl)carbamoyl]thiazol-2-yl}amino)-2-methylpyrimidin-4-yl]piperazine-1-carboxylate)

Item no.

USP-1A19720

Unit

25 mg

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USP-1A19740

N-Boc-N-deshydroxyethyl Dasatinib (2-Methyl-2-propanyl 4-[6-({5-[(2-chloro-6-methylphenyl)carbamoyl]-1,3-thiazol-2-yl}amino)-2-methyl-4-pyrimidinyl]-1-piperazinecarboxylate)

Item no.

USP-1A19740

Unit

25 mg

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USP-1A19900

1-[4-(Cyclopropylcarbonyl)-1-piperazinyl]-2,2,2-trifluoroethanone (1-[4-(Cyclopropylcarbonyl)-1-piperazinyl]-2,2,2-trifluoroethanone)

Item no.

USP-1A19900

Unit

25 mg

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USP-1A19930

N-Boc Vinyl Palbociclib (2-Methyl-2-propanyl 4-{6-[(8-cyclopentyl-5-methyl-7-oxo-6-vinyl-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino]-3-pyridinyl}-1-piperazinecarboxylate)

Item no.

USP-1A19930

Unit

25 mg

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USP-1A20010

Despropan-2-yl Selexipag Alcohol (4-[(5,6-Diphenyl-2-pyrazinyl)amino]-1-butanol)

Item no.

USP-1A20010

Unit

25 mg

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USP-1A20090

Dihydrodexamethasone (9-Fluoro-11beta,17,21-trihydroxy-16alpha-methylpregn-4-ene-3,20-dione)

Item no.

USP-1A20090

Unit

25 mg

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