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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

1209 products found

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USP-1A01090

Monoiodoamiodarone ((2-Butylbenzofuran-3-yl){4-[2-(diethylamino)ethoxy]-3-iodophenyl}methanone)

Item no.

USP-1A01090

CAS Number

[85642-08-6]

Unit

50 mg

Molecular formula

C25H30INO3

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USP-1A01150

Pemetrexed Glutamide Sodium ((S)-4-((S)-4-(4-(2-(2-amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl)benzamido)-4-carboxybutanamido)-4-carboxybutanoate, sodium salt)

Item no.

USP-1A01150

CAS Number

[144051-68-3] (free acid)

Unit

25 mg

Molecular formula

C25H27N6O9. Na

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USP-1A02020

9-Bromo-16alpha-hydroxyprednisolone ((8S,9R,10S,11S,13S,14S,16R,17S)-9-bromo-11,16,17-trihydroxy-17-(2-hydroxyacetyl)-10,13-dimethyl-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-3-one)

Item no.

USP-1A02020

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C21H27BrO6

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USP-1A02100

Clopidogrel Acid N-Oxide (5-((S)-carboxy(2-chlorophenyl)methyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine 5-oxide)

Item no.

USP-1A02100

CAS Number

[1319197-73-3]

Unit

25 mg

Molecular formula

C15H14ClNO3S

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USP-1A02210

N-Methyl Duloxetine 3-Isomer Oxalate ((R)-N,N-dimethyl-3-(naphthalen-1-yloxy)-3-(thiophen-3-yl)propan-1-amine, oxalate)

Item no.

USP-1A02210

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C19H21NOS. C2H2O4

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USP-1A02340

Lactosyl Pregabalin Pyrrolidone ((S)-1-((2R,3R,4R,5S,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)-4-isobutylpyrrolidin-2-one)

Item no.

USP-1A02340

CAS Number

[466678-44-4]

Unit

25 mg

Molecular formula

C20H35NO11

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USP-1A02360

Pemetrexed Sodium 1-Methyl Ester ((S)-4-(4-(2-(2-amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl)benzamido)-5-methoxy-5-oxopentanoic acid, sodium salt)

Item no.

USP-1A02360

CAS Number

[1265908-61-9]

Unit

25 mg

Molecular formula

C21H22N5O6. Na

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USP-1A02370

Pemetrexed Sodium 5-Methyl Ester ((S)-2-(4-(2-(2-amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl)benzamido)-5-methoxy-5-oxopentanoic acid, sodium salt)

Item no.

USP-1A02370

CAS Number

[1265908-60-8]

Unit

25 mg

Molecular formula

C21H22N5O6. Na

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USP-1A02420

Aripiprazole Diquinolinone Butanediol (7,7'-(butane-1,4-diylbis(oxy))bis(3,4-dihydroquinolin-2(1H)-one))

Item no.

USP-1A02420

CAS Number

[882880-12-8]

Unit

25 mg

Molecular formula

C22H24N2O4

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USP-1A02430

Chlorobutoxyquinolinone (7-(4-chlorobutoxy)-3,4-dihydroquinolin-2(1H)-one)

Item no.

USP-1A02430

CAS Number

[120004-79-7]

Unit

25 mg

Molecular formula

C13H16ClNO2

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USP-1A02480

Aripiprazole Bromobutoxyquinolinone Analog (7-(4-bromobutoxy)quinolin-2(1H)-one)

Item no.

USP-1A02480

CAS Number

[203395-59-9]

Unit

25 mg

Molecular formula

C13H14BrNO2

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USP-1A02500

N-Alkyl Aripiprazole (7-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)butoxy)-1-(4-((2-oxo-1,2,3,4-tetrahydroquinolin-7-yl)oxy)butyl)-3,4-dihydroquinolin-2(1H)-one)

Item no.

USP-1A02500

CAS Number

[1424857-63-5]

Unit

25 mg

Molecular formula

C36H42Cl2N4O4

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USP-1A02530

Aripiprazole Isomer (5-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one)

Item no.

USP-1A02530

CAS Number

[203395-78-2]

Unit

25 mg

Molecular formula

C23H27Cl2N3O2

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USP-1A03870

D-Epinephrine ((S)-4-[1-Hydroxy-2-(methylamino)ethyl]pyrocatechol)

Item no.

USP-1A03870

CAS Number

[150-05-0]

Unit

25 mg

Molecular formula

C9H13NO3

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USP-1A08880

N-Nitroso Brinzolamide Solution (1 mg/mL in Methanol) ((R)-4-(ethyl(nitroso)amino)-2-(3-methoxypropyl)-3,4-dihydro-2H-thieno[3,2-e][1,2]thiazine-6-sulfonamide 1,1-dioxide)

Item no.

USP-1A08880

Unit

1 mL

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USP-1A09070

2-[2-(4-Nitroso-1-piperazinyl)ethoxy]ethanol Solution (1 mg/mL in Acetonitrile) (2-(2-(4-Nitrosopiperazin-1-yl)ethoxy)ethan-1-ol)

Item no.

USP-1A09070

Unit

1 mL

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USP-1A09180

N-Nitroso Trimetazidine Solution (1 mg/mL in Methanol) (1-Nitroso-4-[(2,3,4-trimethoxyphenyl)methyl]piperazine)

Item no.

USP-1A09180

Unit

1 mL

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USP-1A09450

N-Nitroso Dipivefrin Solution (1 mg/mL in Methanol) (4-(1-hydroxy-2-(methyl(nitroso)amino)ethyl)-1,2-phenylene bis(2,2-dimethylpropanoate))

Item no.

USP-1A09450

Unit

1 mL

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USP-1A09570

N-Nitroso N,N'-Dibenzylethanediamine Solution (1 mg/mL in Methanol) (N-Benzyl-N-[2-(benzylamino)ethyl]nitrosamine)

Item no.

USP-1A09570

Unit

1 mL

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USP-1A09620

N-Nitroso N-Methyl Valacyclovir Solution (1 mg/mL in Methanol) (2-((2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl N-methyl-N-nitroso-L-valinate)

Item no.

USP-1A09620

Unit

1 mL

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USP-1A09770

N-Nitroso Desipramine Solution (1 mg/mL in Methanol) (N-[3-(10,11-Dihydro-5H-dibenzo[b,f]azepin-5-yl)propyl]-N-methylnitrous amide)

Item no.

USP-1A09770

Unit

1 mL

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USP-1A09790

N-Nitroso Desmethyl Dexchlorpheniramine Solution (1 mg/mL in Methanol) ((S)-N-[3-(4-Chlorophenyl)-3-(pyridin-2-yl)propyl]-N-methylnitrous amide)

Item no.

USP-1A09790

Unit

1 mL

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USP-1A09850

N-Nitroso N-Desmethyl Doxylamine Solution (1 mg/mL in Methanol) (N-Methyl-N-[2-[1-phenyl-1-(pyridin-2-yl)ethoxy]ethyl]nitrous amide)

Item no.

USP-1A09850

Unit

1 mL

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USP-1A09870

N-Nitroso Fenfluramine Solution (1 mg/mL in Methanol) (N-Ethyl-N-(1-(3-(trifluoromethyl)phenyl)propan-2-yl)nitrous amide))

Item no.

USP-1A09870

Unit

1 mL

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USP-1A10170

Cetirizine Hydrochloride Methyl Ester (Methyl 2-[2-[4-[(4-Chlorophenyl)phenylmethyl]-1-piperazinyl]ethoxy]acetate dihydrochloride)

Item no.

USP-1A10170

Unit

25 mg

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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-1A11860

Monomethyl Sumatriptan (N-Methyl-1-{3-[2-(methylamino)ethyl]-1H-indol-5-yl}methanesulfonamide)

Item no.

USP-1A11860

Unit

25 mg

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USP-1A12190

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

Item no.

USP-1A12190

Unit

25 mg

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USP-1A12210

(2R,3S) Isavuconazole ((rel-4-(2-((2R,3S)-3-(2,5-difluorophenyl)-3-hydroxy-4-(1H-1,2,4-triazol-1-yl)butan-2-yl)thiazol-4-yl)benzonitrile)

Item no.

USP-1A12210

Unit

25 mg

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USP-1A12560

Desbenzyl Nicardipine (3-Methyl 5-(2-(methylamino)ethyl) 2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate)

Item no.

USP-1A12560

Unit

25 mg

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USP-1A13320

Hydrocortisone 21-Butyrate (11Beta,17-Dihydroxy-3,20-dioxopregna-4-en-21-yl butyrate)

Item no.

USP-1A13320

Unit

25 mg

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USP-1A13340

Bromo Desonide (9alpha-Bromo-11Beta,21-dihydroxy-16alpha,17-[(1-methylethylidene)bis(oxy)]pregna-1,4-diene-3,20-dione)

Item no.

USP-1A13340

Unit

25 mg

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USP-1A13410

Edaravone Deoxy Dimer(3',5-Dimethyl-1',2-diphenyl-1'H,2H-[3,4'-bipyrazol]-5'-ol)

Item no.

USP-1A13410

Unit

25 mg

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USP-1A13430

N-Methyl Regadenoson (1-[6-amino-9-[(2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]purin-2-yl]-N,N-dimethylpyrazole-4-carboxamide)

Item no.

USP-1A13430

Unit

25 mg

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USP-1A13460

O-Desmethyl Apixaban (1-(4-Hydroxyphenyl)-7-oxo-6-[4-(2-oxopiperidin-1-yl)phenyl]-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide)

Item no.

USP-1A13460

Unit

25 mg

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USP-1A13480

N-Acetyldespiperazinyl Nintedanib (Methyl (Z)-3-[{[4-(N-methylacetamido)phenyl]amino}(phenyl)methylene]-2-oxoindoline-6-carboxylate)

Item no.

USP-1A13480

Unit

25 mg

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USP-1A13600

Ethyl Nintedanib (Ethyl (Z)-3-[({4-[N-methyl-2-(4-methylpiperazin-1-yl)acetamido]phenyl}amino)(phenyl)methylene]-2-oxo-2,3-dihydro-1H-indole-6-carboxylate)

Item no.

USP-1A13600

Unit

25 mg

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USP-1A13680

Nintedanib N-Oxide ((Z)-4-(2-((4-(((6-(Methoxycarbonyl)-2-oxoindolin-3-ylidene)(phenyl)methyl)amino)phenyl)(methyl)amino)-2-oxoethyl)-1-methylpiperazine 1-oxide)

Item no.

USP-1A13680

Unit

25 mg

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USP-1A13690

Edoxaban N-Oxide (N'-(5-Chloropyridin-2-yl)-N-[(1S,2R,4S)-4-(dimethylcarbamoyl)-2-[(5-methyl-5-oxido-6,7-dihydro-4H-[1,3]thiazolo[5,4-c]pyridin-5-ium-2-carbonyl)amino]cyclohexyl]oxamide)

Item no.

USP-1A13690

Unit

25 mg

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USP-1A13720

Desbenzyl Umeclidinium Bromide (4-(Hydroxydiphenylmethyl)-1-(2-hydroxyethyl)-1-Azoniabicyclo[2.2.2]octane, bromide)

Item no.

USP-1A13720

Unit

25 mg

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USP-1A13760

Despiperazinyl Nintedanib (Methyl (Z)-3-{[(4-(methylamino)phenyl)amino](phenyl)methylene}-2-oxoindoline-6-carboxylate)

Item no.

USP-1A13760

Unit

25 mg

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USP-1A13820

Dihydro Axitinib (N-Methyl-2-[[3-[2-(2-pyridinyl)ethyl]-1H-indazol-6-yl]thio]benzamide)

Item no.

USP-1A13820

Unit

25 mg

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USP-1A14550

Edaravone Sulfopropanoic Acid (2-(3-Methyl-5-oxo-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-2-sulfopropanoic acid)

Item no.

USP-1A14550

Unit

25 mg

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USP-1A14560

Amlodipine Morpholine Analog (5-Ethyl 7-methyl 6-(2-chlorophenyl)-3,4,6,7-tetrahydro-8-methyl-2H-1,4-benzoxazine-5,7-dicarboxylate)

Item no.

USP-1A14560

Unit

25 mg

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USP-1A14780

Tadalafil Enantiomer ((6S,12aS)-6-(1,3-Benzodioxol-5-yl)-2,3,6,7,12,12a-hexahydro-2-methyl-pyrazino[1',2':1,6]pyrido[3,4-b]indole-1,4-dione)

Item no.

USP-1A14780

Unit

25 mg

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USP-1A14830

Cyano Biphenyl Methylazide (4'-(Azidomethyl)-2-biphenylcarbonitrile)

Item no.

USP-1A14830

Unit

25 mg

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USP-1A15170

Dabigatran Etexilate Methyl Ester (Methyl 3-(2-{[(4-{[(hexyloxy)carbonyl]carbamoyl}phenyl)amino]methyl}-1-methyl-N-(pyridin-2-yl)-1H-benzimidazole-5-carboxamido)propanoate)

Item no.

USP-1A15170

Unit

25 mg

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USP-1A15210

Dabigatran Benzamide Ethyl Ester (Ethyl 3-{2-[((4-carbamoylphenyl)amino)methyl]-1-methyl-N-(pyridin-2-yl)-1H-benzimidazole-5-carboxamido}propanoate)

Item no.

USP-1A15210

Unit

25 mg

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USP-1A15720

Atorvastatinyl Amlodipine

Item no.

USP-1A15720

Unit

25 mg

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USP-1A15780

Edaravone Dihydroxy Trimer (5,5''-Dihydroxy-3,3'',5'-trimethyl-1,1'',2'-triphenyl-1H,1''H-4,4':4',4''-terpyrazol-3'(2'H)-one)

Item no.

USP-1A15780

Unit

25 mg

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