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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

1507 products found

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USP-1A00130

Quetiapine Tetraethylene Glycol Fumarate Salt (COLD SHIPMENT REQUIRED) (2-(2-(2-(2-(4-(dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl)ethoxy)ethoxy)ethoxy)ethan-1-ol-fumarate)

Item no.

USP-1A00130

CAS Number

[2470243-24-2]

Unit

25 mg

Molecular formula

C25H33N3O4S ? C4H4O4

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USP-1A00220

Desoximetasone Acid (COLD SHIPMENT) ((11Beta,16alpha,17Beta)-9-Fluoro-11-hydroxy-16-methyl-3-oxoandrosta-1,4- diene-17-carboxylic acid, 9-Fluoro-11Beta-hydroxy-16alpha-methyl-3-oxoandrosta-1,4-diene-17Beta-carboxylic acid)

Item no.

USP-1A00220

CAS Number

[75262-69-0]

Unit

25 mg

Molecular formula

C21H27FO4

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USP-1A00450

Pyrazinediethanol (2,2'-(pyrazine-2,5-diyl)bis(ethan-1-ol))

Item no.

USP-1A00450

CAS Number

[4744-51-8]

Unit

10 mg

Molecular formula

C8H12N2O2

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USP-1A00460

Pyrrolic acid Derivative (4-(2-hydroxyethyl)-1H-pyrrole-3-carboxylic acid)

Item no.

USP-1A00460

CAS Number

[404839-11-8]

Unit

10 mg

Molecular formula

C7H9NO3

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USP-1A00590

7-Fluoro Risperidone (COLD SHIPMENT REQUIRED) (3-(2-(4-(7-fluorobenzo[d]isoxazol-3-yl)piperidin-1-yl)ethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one)

Item no.

USP-1A00590

CAS Number

[n/a]

Unit

10 mg

Molecular formula

C23H27FN4O2

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USP-1A00600

Risperidone Difluoroketone (3-(2-(4-(2,4-difluorobenzoyl)piperidin-1-yl)ethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one)

Item no.

USP-1A00600

CAS Number

[158697-67-7]

Unit

10 mg

Molecular formula

C23H27F2N3O2

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USP-1A00720

Desiodoamiodarone ((2-butylbenzofuran-3-yl)(4-(2-(diethylamino)ethoxy)phenyl)methanone)

Item no.

USP-1A00720

CAS Number

[23551-25-9]

Unit

25 mg

Molecular formula

C25H31NO3

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USP-1A00750

Tolyloyl Bromopropionamide (3-bromo-N,N-dimethyl-4-oxo-4-(p-tolyl)butanamide)

Item no.

USP-1A00750

CAS Number

[836627-56-6]

Unit

25 mg

Molecular formula

C13H16BrNO2

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USP-1A00830

Atorvastatin tert-Butyl Ester (tert-butyl (3R,5R)-7-(2-(4-fluorophenyl)-5-isopropyl-3-phenyl-4-(phenylcarbamoyl)-1H-pyrrol-1-yl)-3,5-dihydroxyheptanoate)

Item no.

USP-1A00830

CAS Number

[134395-00-9]

Unit

25 mg

Molecular formula

C37H43FN2O5

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USP-1A00840

3'-Demethyl-3'-N-[(4-methylphenyl)sulfonyl]azithromycin

Item no.

USP-1A00840

CAS Number

[612069-31-5]

Unit

25 mg

Molecular formula

C44H76N2O14S

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USP-1A00880

16alpha-Hydroxyprednisolone ((8S,9S,10R,11S,13S,14S,16R,17S)-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-1A00880

CAS Number

[13951-70-7]

Unit

25 mg

Molecular formula

C21H28O6

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USP-1A00910

Celecoxib Open Ring (4-((1,1,1-trifluoro-4-hydroxy-4-(p-tolyl)but-3-en-2-ylidene)amino)benzenesulfonamide)

Item no.

USP-1A00910

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C17H15F3N2O3S

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USP-1A00920

Desaryl Celecoxib (5-(p-tolyl)-3-(trifluoromethyl)-1H-pyrazole)

Item no.

USP-1A00920

CAS Number

[948293-46-7]

Unit

25 mg

Molecular formula

C11H9F3N2

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USP-1A00940

Duloxetine 4-Naphthyl Isomer Hydrobromide (4-(3-(methylamino)-1-(thiophen-2-yl)propyl)naphthalen-1-ol, hydrobromide)

Item no.

USP-1A00940

CAS Number

[949096-01-9]

Unit

25 mg

Molecular formula

C18H19NOS·HBr

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USP-1A00960

Duloxetine Alcohol ((R)-3-(methylamino)-1-(thiophen-2-yl)propan-1-ol)

Item no.

USP-1A00960

CAS Number

[116539-57-2]

Unit

25 mg

Molecular formula

C8H13NOS

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USP-1A01040

11-Ketofluticasone Propionate ((6S,8S,9R,10S,13S,14S,16R,17R)-6,9-Difluoro-17-(((fluoromethyl)thio)carbonyl)-10,13,16-trimethyl-3,11-dioxo-6,7,8,9,10,11,12,13,14,15,16,17-dodecahydro-3H-cyclopenta[a]phenanthren-17-yl propionate)

Item no.

USP-1A01040

CAS Number

[1219174-94-3]

Unit

25 mg

Molecular formula

C25H29F3O5S

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USP-1A01180

Chlorothiophene carboxylic acid (5-chlorothiophene-2-carboxylic acid)

Item no.

USP-1A01180

CAS Number

[24065-33-6]

Unit

25 mg

Molecular formula

C5H3ClO2S

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USP-1A01290

TEMED Dihydrochloride (N1,N1,N2,N2-tetramethylethane-1,2-diamine, hydrochloride)

Item no.

USP-1A01290

CAS Number

[7677-21-6]

Unit

25 mg

Molecular formula

C6H16N2·2HCl

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USP-1A01310

tert-Octylamine (2,4,4-trimethylpentan-2-amine)

Item no.

USP-1A01310

CAS Number

[107-45-9]

Unit

25 mg

Molecular formula

C8H19N

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USP-1A01520

Rivaroxaban N-methylphthalamido Analog ((S)-N1-methyl-N2-((2-oxo-3-(4-(3-oxomorpholino)phenyl)oxazolidin-5-yl)methyl)phthalamide)

Item no.

USP-1A01520

CAS Number

[2206360-74-7]

Unit

25 mg

Molecular formula

C23H24N4O6

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USP-1A01570

Rivaroxaban Phthalimido Analog ((R)-2-(2-hydroxy-3-((4-(3-oxomorpholino)phenyl)amino)propyl) isoindoline-1,3-dione)

Item no.

USP-1A01570

CAS Number

[446292-07-5]

Unit

25 mg

Molecular formula

C21H21N3O5

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USP-1A01750

Desfluorocitalopram Oxalate (1-(3-(dimethylamino)propyl)-1-phenyl-1,3-dihydroisobenzofuran-5-carbonitrile, oxalate)

Item no.

USP-1A01750

CAS Number

[1093072-86-6]

Unit

25 mg

Molecular formula

C20H22N2O C2H2O4

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USP-1A02450

2-Dechloro Aripiprazole (7-(4-(4-(3-chlorophenyl)piperazin-1-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one)

Item no.

USP-1A02450

CAS Number

[203395-82-8]

Unit

25 mg

Molecular formula

C23H28ClN3O2

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USP-1A02570

3-Dechloro Aripiprazole (7-(4-(4-(2-chlorophenyl)piperazin-1-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one)

Item no.

USP-1A02570

CAS Number

[203395-81-7]

Unit

25 mg

Molecular formula

C23H28ClN3O2

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USP-1A03370

Varenicline Acetamide (COLD SHIPMENT REQUIRED) (1-(6,7,9,10-tetrahydro-8H-6,10-methanoazepino[4,5-g]quinoxalin-8-yl)ethan-1-one)

Item no.

USP-1A03370

Unit

25 mg

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USP-1A04200

N-Nitroso Metoprolol Solution (1 mg/mL in Methanol) (N-(2-hydroxy-3-(4-(2-methoxyethyl)phenoxy)propyl)-N-isopropylnitrous amide)

Item no.

USP-1A04200

Unit

1 mL

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USP-1A04740

N-Formyl Palbociclib (4-(6-((6-acetyl-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino)pyridin-3-yl)piperazine-1-carbaldehyde)

Item no.

USP-1A04740

Unit

25 mg

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USP-1A09030

N-Nitroso N-Desmethyl Zolmitriptan Solution (1 mg/mL in Methanol) ((S)-N-methyl-N-(2-(5-((2-oxooxazolidin-4-yl)methyl)-1H-indol-3-yl)ethyl)nitrous amide)

Item no.

USP-1A09030

Unit

1 mL

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USP-1A09200

N-Nitroso Enalapril Solution (1 mg/mL in Methanol) (N-((S)-1-Ethoxy-1-oxo-4-phenylbutan-2-yl)-N-nitroso-L-alanylproline)

Item no.

USP-1A09200

Unit

1 mL

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USP-1A09360

N-Nitroso N-Desmethyl Thonzylamine Solution (1 mg/mL in Methanol) (N-(2-((4-Methoxybenzyl)(pyrimidin-2-yl)amino)ethyl)-N-methylnitrous amide)

Item no.

USP-1A09360

Unit

1 mL

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USP-1A09780

N-Nitroso N-Desmethyl Desvenlafaxine Solution (1 mg/mL in Methanol) (N-[2-(1-Hydroxycyclohexyl)-2-(4-hydroxyphenyl)ethyl]-N-methylnitrousamide)

Item no.

USP-1A09780

CAS Number

[3017268-48-0]

Unit

1 mL

Molecular formula

C15H22N2O3

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USP-1A12110

O-Methyl Tapentadol Hydrochloride CII ((2R,3R)-3-(3-methoxyphenyl)-N,N,2-trimethylpentan-1-amine hydrochloride) (CONTROLLED IN GERMANY)

Item no.

USP-1A12110

Unit

10 mg

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USP-1A12900

Dolutegravir Open Ring ((R)-N-(2,4-Difluorobenzyl)-9-hydroxy-2-(4-hydroxybutan-2-yl)-1,8-dioxo-1,8-dihydro-2H-pyrido[1,2-a]pyrazine-7-carboxamide)

Item no.

USP-1A12900

Unit

25 mg

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USP-1A13440

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

Item no.

USP-1A13440

Unit

25 mg

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USP-1A14570

Rosuvastatin R,R Diastereomer ((3R,5R,E)-7-(4-(4-fluorophenyl)-6-isopropyl-2-(N-methylmethylsulfonamido)pyrimidin-5-yl)-3,5-dihydroxyhept-6-enoate, Calcium salt (2: 1))

Item no.

USP-1A14570

Unit

25 mg

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USP-1A15200

Des-(3-(Pyridin-2-ylamino)propanoate) Dabigatran Carbamate Ethyl Ester (Ethyl 2-{[(4-{[(hexyloxy)carbonyl]carbamoyl}phenyl)amino]methyl}-1-methyl-1H-benzimidazole-5-carboxylate)

Item no.

USP-1A15200

Unit

25 mg

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USP-1A15270

Bromophenyl Ethenyloxy Pyrimidinamine (5-(4-bromophenyl)-6-(vinyloxy)pyrimidin-4-amine)

Item no.

USP-1A15270

Unit

25 mg

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USP-1A15280

Desbromo Macitentan (N-{5-(4-Bromophenyl)-6-[2-(2-pyrimidinyloxy)ethoxy]-4-pyrimidinyl}-N'-propylsulfuric diamide)

Item no.

USP-1A15280

Unit

25 mg

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USP-1A15390

Bisbenzothiophenyl Piperazine (1,4-Bis(benzo[b]thiophen-4-yl)piperazine)

Item no.

USP-1A15390

Unit

25 mg

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USP-1A15400

Brexpiprazole Di-N-Oxide (7-[4-[4-(1-benzothiophen-4-yl)-1,4-dioxidopiperazine-1,4-diium-1-yl]butoxy]-1H-quinolin-2-one)

Item no.

USP-1A15400

Unit

25 mg

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USP-1A15470

Lurasidone Piperazine N-Oxide ((3aR,4S,7R,7aS)-2-[[(1R,2R)-2-[[4-(1,2-Benzisothiazol-3-yl)-1-oxido-1-piperazinyl]methyl]cyclohexyl]methyl]hexahydro-4,7-methano-1H-isoindole-1,3(2H)-dione)

Item no.

USP-1A15470

Unit

25 mg

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USP-1A15480

Vinyl Palbociclib (8-Cyclopentyl-5-methyl-2-{[5-(piperazin-1-yl)pyridin-2-yl]amino}-6-vinylpyrido[2,3-d]pyrimidin-7(8H)-one)

Item no.

USP-1A15480

Unit

25 mg

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USP-1A15680

(2S,3R)-Isavuconazole Nitrile ((2S,3R)-3-(2,5-Difluorophenyl)-3-hydroxy-2-methyl-4-(1H-1,2,4-triazol-1-yl)butanenitrile)

Item no.

USP-1A15680

Unit

25 mg

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USP-1A15690

N-Nitroso Dasatinib Amine (N-(2-Chloro-6-methylphenyl)-2-[[2-methyl-6-(4-nitroso-1-piperazinyl)-4-pyrimidinyl]amino]-5-thiazolecarboxamide)

Item no.

USP-1A15690

Unit

5 mg

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USP-1A16780

7,20-Dioxopregna-5,16-dien-3Beta-yl acetate ((3S,8R,9S,10R,13S,14S)-17-acetyl-10,13-dimethyl-7-oxo-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl acetate)

Item no.

USP-1A16780

Unit

25 mg

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USP-1A17300

Axitinib Sulfone (N-Methyl-2-{[3-[(1E)-2-(pyridin-2-yl)ethenyl]-1H-indazol-6-yl]sulfonyl}benzamide)

Item no.

USP-1A17300

Unit

25 mg

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USP-1A17320

N-Pyranyl Axitinib (N-Methyl-2-{[3-[(1E)-2-(pyridin-2-yl)ethenyl]-1-(tetrahydro-2H-pyran-2-yl)-1H-indazol-6-yl]sulfanyl}benzamide)

Item no.

USP-1A17320

Unit

25 mg

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USP-1A18280

Bisoprolol 2-ene (3-{4-[(2-Isopropoxyethoxy)methyl]phenoxy}-N-isopropylprop-2-en-1-amine)

Item no.

USP-1A18280

Unit

25 mg

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USP-1A18450

Destetrazole Cefoperazone (N-[(1R)-2-[[(4R,5R)-3,11-Dioxo-10-oxa-6-thia-2-azatricyclo[6.3.0.02,5]undec-1(8)-en-4-yl]amino]-1-(4-hydroxyphenyl)-2-oxoethyl]-4-ethyl-2,3-dioxopiperazine-1-carboxamide)

Item no.

USP-1A18450

Unit

25 mg

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USP-1A18600

Anastrozole Diamide (2,2'-{5-[(1H-1,2,4-Triazol-1-yl)methyl]-1,3-phenylene}bis(2-methylpropanamide)

Item no.

USP-1A18600

Unit

25 mg

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