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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

1507 products found

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USP-1A04910

17-Keto Drospirenone (COLD SHIPMENT REQUIRED) (6beta,7beta:15beta,16beta-Dimethyleneandrost-4-ene-3,17-dione)

Item no.

USP-1A04910

Unit

25 mg

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USP-1A05020

Desdiethylamino Sunitinib ((Z)-N-Ethyl-5-[(5-fluoro-2-oxoindolin-3-ylidene)methyl]-2,4-dimethyl-1H-pyrrole-3-carboxamide)

Item no.

USP-1A05020

Unit

25 mg

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USP-1A05230

N-Nitroso Paroxetine Solution (1 mg/mL in Methanol) ((3S,4R)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4-fluorophenyl)-1-nitrosopiperidine)

Item no.

USP-1A05230

Unit

1 mL

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USP-1A05310

N-Nitroso Nebivolol (N-Nitroso-(RS)-1-[(RS)-6-fluorochroman-2-yl]-2-({(RS)-2-[(SR)-6-fluorochroman-2-yl]-2-hydroxyethyl}amino)ethan-1-ol)

Item no.

USP-1A05310

CAS Number

[1391051-68-5]

Unit

25 mg

Molecular formula

C22H24F2N2O5

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USP-1A05320

N-Nitroso Biotin Solution (1 mg/mL in Acetonitrile) (5-((3aS,4S,6aR)-1-nitroso-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanoic Acid)

Item no.

USP-1A05320

Unit

1 mL

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USP-1A05430

N-Nitroso Atomoxetine Solution (1 mg/mL in Methanol) ((R)-N-methyl-N-(3-phenyl-3-(o-tolyloxy)propyl)nitrous amide)

Item no.

USP-1A05430

Unit

1 mL

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USP-1A05530

Atracurium Iodide 3-Methylpentanediol Analog (2,2'-(((3-methylpentane-1,5-diyl)bis(oxy))bis(3-oxopropane-3,1-diyl))bis(1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium) iodide)

Item no.

USP-1A05530

Unit

10 mg

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USP-1A05580

1,3-Bis(isopropylamino)propan-2-ol Dihydrochloride (1,3-bis(isopropylamino)propan-2-ol Dihydrochloride)

Item no.

USP-1A05580

Unit

25 mg

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USP-1A05880

Carbidopa Ethyl Ester (Ethyl (S)-3-(3,4-dihydroxyphenyl)-2-hydrazineyl-2-methylpropanoate)

Item no.

USP-1A05880

Unit

25 mg

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USP-1A05890

Cisatracurium Besylate cis-Quaternary Methyl Ester ((1R,2R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-(3-methoxy-3-oxopropyl)-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-iumbenzenesulfonate)

Item no.

USP-1A05890

Unit

25 mg

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USP-1A05920

Lithium Pilocarpate (Lithium(2S,3R)-2-ethyl-4-hydroxy-3-((1-methyl-1H-imidazol-5-yl)methyl)butanoate)

Item no.

USP-1A05920

Unit

25 mg

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USP-1A05970

4-Methyl E-Olefin Naftifine Hydrochloride ((E)-N-methyl-N-((4-methylnaphthalen-1-yl)methyl)-3-phenylprop-2-en-1-amine hydrochloride)

Item no.

USP-1A05970

Unit

25 mg

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USP-1A06010

4-(Pyridin-2-yl)benzaldehyde (4-(Pyridin-2-yl)benzaldehyde)

Item no.

USP-1A06010

Unit

25 mg

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USP-1A06130

Rosuvastatin Ethyl Ester

Item no.

USP-1A06130

CAS Number

[851443-04-4]

Unit

25 mg

Molecular formula

C24H32FN3O6S

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USP-1A06230

6-Oxo Docetaxel (COLD SHIPMENT REQUIRED)

Item no.

USP-1A06230

Unit

25 mg

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USP-1A06250

4-Epi-6-oxo Docetaxel (5beta,20-epoxy-1,7alpha-dihydroxy-9,10-dioxotax-11-ene-2alpha,4,13alpha-triyl 4-acetate 2-benzoate 13-[(2R,3S)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-3-phenylpropanoate])

Item no.

USP-1A06250

Unit

25 mg

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USP-1A06540

Memantine lactose adduct ((2S,3R,4S,5R,6R)-2-(((2R,3S,4R,5R,6R)-6-(((1r,3R,5S,7r)-3,5-dimethyladamantan-1-yl)amino)-4,5-dihydroxy-2-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol)

Item no.

USP-1A06540

Unit

25 mg

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USP-1A06710

Cetirizine N-Oxide (2-(2-{4-[(4-Chlorophenyl)(phenyl)methyl]piperazin-1-yl}ethoxy)acetic acid N1-oxide)

Item no.

USP-1A06710

Unit

25 mg

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USP-1A06790

Desmethyl Ipratropium ((1R,3r,5S)-8-Isopropyl-8-azabicyclo[3.2.1]octan-3-yl 3-hydroxy-2-phenylpropanoate)

Item no.

USP-1A06790

CAS Number

[22235-81-0]

Unit

25 mg

Molecular formula

C19H27NO3

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USP-1A06840

Mycophenolate Mofetil N-Oxide (2-Morpholinoethyl (E)-6-(1,3-dihydro-4-hydroxy-6-methoxy-7-methyl-3-oxo-5-isobenzofuranyl)-4-methyl-4-hexenoate N-oxide)

Item no.

USP-1A06840

Unit

25 mg

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USP-1A06890

Hexyl Undecyl Pyranone ((S)-3-Hexyl-6-undecyl-5,6-dihydro-2H-pyran-2-one)

Item no.

USP-1A06890

Unit

25 mg

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USP-1A07010

Deoxy Venlafaxine (2-cyclohexyl-2-(4-methoxyphenyl)-N,N-dimethylethan-1-amine, 2-Cyclohexyl-2-(4-methoxyphenyl)-N,N-dimethylethylamine)

Item no.

USP-1A07010

Unit

25 mg

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USP-1A07050

Ezetimibe meta-Fluoroaniline isomer ((3R,4S)-1-(3-Fluorophenyl)-3-[(3S)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-(4-hydroxyphenyl)-2-azetidinone)

Item no.

USP-1A07050

CAS Number

[1700622-06-5]

Unit

25 mg

Molecular formula

C24H21F2NO3

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USP-1A07320

6Beta-Hydroxyestradiol ((6R,8R,9S,13S,14S,17S)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,6,17-triol)

Item no.

USP-1A07320

Unit

25 mg

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USP-1A07400

Propafenone Glycerol Dimer (1,1'-(2,2'-(2-Hydroxypropane-1,3-diyl)bis(oxy)bis(2,1-phenylene))bis(3-phenylpropan-1-one))

Item no.

USP-1A07400

Unit

25 mg

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USP-1A07600

Ammonium Methoxyiminofuranyl Acetate ((Z)-2-(Furan-2-yl)-2-(methoxyimino)acetic acid ammonium salt)

Item no.

USP-1A07600

Unit

25 mg

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USP-1A07620

4-(4-Chlorophenyl)-4-Piperidinol (4-(4-Chlorophenyl)piperidin-4-ol)

Item no.

USP-1A07620

Unit

25 mg

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USP-1A07650

Isonicotinic Acid (Pyridine-4-carboxylic Acid)

Item no.

USP-1A07650

Unit

25 mg

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USP-1A07660

2-Pyridineethanol (2-(Pyridin-2-yl)ethanol)

Item no.

USP-1A07660

Unit

25 mg

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USP-1A07710

Ethyl Mycophenolate (Ethyl(E)-6-(1,3-dihydro-4-hydroxy-6-methoxy-7-methyl-3-oxo-5-isobenzofuranyl)-4-methyl-4-hexenoate)

Item no.

USP-1A07710

Unit

25 mg

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USP-1A07730

2-Benzimidazolinone (1,3-Dihydro-2H-benzimidazol-2-one)

Item no.

USP-1A07730

Unit

25 mg

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USP-1A07810

4-Chloro Omeprazole (2-[(RS)-[4-Chloro-3,5-dimethylpyridin-2-yl)methyl]sulfinyl]-5-methoxy-1H-benzimidazole)

Item no.

USP-1A07810

Unit

25 mg

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USP-1A07820

Carbamazepine Dione (10,11-dioxo-10,11-dihydro-5H-dibenzo[b,f]azepine-5-carboxamide)

Item no.

USP-1A07820

CAS Number

[537693-29-1]

Unit

25 mg

Molecular formula

C15H10N2O3

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USP-1A07870

N-(1,2-Dicarboxyethyl) Rosiglitazone (2-(5-{[4-({2-[Methyl(2-pyridinyl)amino]ethyl}oxy)phenyl]methyl}-2,4-dioxo-1,3-thiazolidin-3-yl)butanedioic acid)

Item no.

USP-1A07870

Unit

25 mg

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USP-1A07920

15-Keto-travoprost (10 mg) (INTERNATIONAL COLD CHAIN SHIPMENT REQUIRED) (isopropyl (Z)-7-((1R,2R,3R,5S)-3,5-dihydroxy-2-((E)-3-oxo-4-(3-(trifluoromethyl)phenoxy)but-1-en-1-yl)cyclopentyl)hept-5-enoate)

Item no.

USP-1A07920

Unit

10 mg

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USP-1A08010

Triiodothyroacetic acid ([4-(4-Hydroxy-3-iodophenoxy)-3,5-diiodophenyl]acetic acid)

Item no.

USP-1A08010

Unit

25 mg

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USP-1A08050

Inosine (9-beta-D-Ribofuranosylpurine-6(1H)-one)

Item no.

USP-1A08050

Unit

25 mg

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USP-1A08130

11-Propionate 21-Chloro Diflorasone (21-Chloro-6alpha,9-difluoro-11beta,17-dihydroxy-16beta-methylpregna-1,4-diene-3,20-dione 11-propionate)

Item no.

USP-1A08130

Unit

25 mg

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USP-1A08180

Icomethasone Furoate (9alpha-Chloro-11beta,21-dihydroxy-16alpha-methyl-3,20-dioxopregna-1,4-dien-17-yl furan-2-carboxylate)

Item no.

USP-1A08180

Unit

25 mg

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USP-1A08200

Zolpidic Acid (2-(6-Methyl-2-p-tolylimidazo[1,2-alpha]pyridin-3-yl)acetic acid)

Item no.

USP-1A08200

Unit

25 mg

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USP-1A08240

N-Benzyl Epinephrine ((R)-4-{2-[Benzyl(methyl)amino]-1-hydroxyethyl}benzene-1,2-diol)

Item no.

USP-1A08240

Unit

25 mg

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USP-1A08280

11-Hydroxy-N-Methyldesloratadine (8-Chloro-5,6-dihydro-11-hydroxy-11-(1-methylpiperidin-4-yl)-11H-benzo[5,6] cyclohepta[1,2-b]pyridine)

Item no.

USP-1A08280

Unit

25 mg

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USP-1A08320

Bicalutamide Sulfide (N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-(4-fluorophenylthio)-2-hydroxy-2-methylpropanamide)

Item no.

USP-1A08320

Unit

25 mg

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USP-1A08360

Sumatriptan N-Oxide ([3-[2-(Dimethylamino-N-oxide)ethyl]-1H-indol-5-yl]-N-methylmethanesulfonamide)

Item no.

USP-1A08360

Unit

25 mg

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USP-1A08370

Fluconazole Diol (2-(2,4-Difluorophenyl)-3-(1H-1,2,4-triazol-1-yl)propane-1,2-diol)

Item no.

USP-1A08370

Unit

25 mg

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USP-1A08410

Deschloro Bupropion Hydrochloride (2-(tert-Butylamino)-1-phenylpropan-1-one hydrochloride)

Item no.

USP-1A08410

Unit

25 mg

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USP-1A08420

Loperamide Piperidinolamide Hydrobromide (1,4-Bis[4-(4-chlorophenyl)-4-hydroxypiperidin-1-yl]-2,2-diphenylbutan-1-one hydrobromide)

Item no.

USP-1A08420

Unit

25 mg

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USP-1A08500

Fluvoxamine Z-isomer Maleate ((Z)-5-methoxy-1-(4-(trifluoromethyl)phenyl)pentan-1-one O-(2-aminoethyl) oxime maleate)

Item no.

USP-1A08500

Unit

10 mg

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USP-1A08530

Linezolid N-oxide ((S)-4-4-[5-(Acetamidomethyl)-2-oxooxazolidin-3-yl]-2-fluorophenylmorpholine 4-oxide)

Item no.

USP-1A08530

CAS Number

[189038-36-6]

Unit

25 mg

Molecular formula

C16H20FN3O5

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USP-1A08630

N-Desmethyl Ondansetron (1,2,3,9-Tetrahydro-3-[(2-methyl-1H-imidazole-1-yl)methyl]-4H-carbazol-4-one)

Item no.

USP-1A08630

Unit

25 mg

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