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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

1335 products found

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USP-1A05210

N-Nitroso Mefenamic Acid (2-((2,3-Dimethylphenyl)(nitroso)amino)benzoic acid)

Item no.

USP-1A05210

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-1A05470

Bromotrimethoprim Analog (5-(3-Bromo-4,5-dimethoxybenzyl)pyrimidine-2,4-diamine)

Item no.

USP-1A05470

Unit

25 mg

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USP-1A05650

Despropyl Macitentan (COLD SHIPMENT REQUIRED) (N-[5-(4-Bromophenyl)-6-[2-[(5-bromo-2-pyrimidinyl)oxy]ethoxy]-4-pyrimidinyl]sulfamide)

Item no.

USP-1A05650

Unit

25 mg

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USP-1A05850

Epinine Hydroiodide (4-(2-(Methylamino)ethyl)benzene-1,2-diol hydroiodide)

Item no.

USP-1A05850

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-1A05930

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

Item no.

USP-1A05930

Unit

25 mg

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USP-1A05940

3-Chloro Sulfamethoxazole (4-amino-3-chloro-N-(5-methylisoxazol-3-yl)benzenesulfonamide)

Item no.

USP-1A05940

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-1A06120

ortho-Leflunomide (5-Methyl-N-(2-(trifluoromethyl)phenyl)isoxazole-4-carboxamide)

Item no.

USP-1A06120

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-1A06380

4-Methoxy Itraconazole Derivative (2-sec-Butyl-4-{4-[4-(4-methoxyphenyl)piperazin-1-yl]phenyl}-2H-1,2,4-triazol-3(4H)-one)

Item no.

USP-1A06380

Unit

25 mg

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USP-1A06640

Trityl Candesartan Cilexetil (1-Cyclohexyloxycarbonyloxyethyl 2-ethoxy-1-{[2'-(1-trityl-1H-tetrazol-5-yl)biphenyl-4-yl]methyl}benzimidazole-7-carboxylate)

Item no.

USP-1A06640

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-1A06870

D-Leucine Orlistat (COLD SHIPMENT REQUIRED) ((S)-1-[(2S,3S)-3-Hexyl-4-oxooxetan-2-yl]tridecan-2-yl formyl-D-leucinate)

Item no.

USP-1A06870

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-1A06930

3-Chlorophenyl Sertraline Hydrochloride ((1RS,4RS)-4-(3-chlorophenyl)-N-methyl-1,2,3,4-tetrahydronaphthalen-1-amine hydrochloride)

Item no.

USP-1A06930

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-1A07160

4-Chloro rac-Sertraline Hydrochloride (rel-(1R,4R)-4-(4-chlorophenyl)-N-methyl-1,2,3,4-tetrahydronaphthalen-1-amine hydrochloride)

Item no.

USP-1A07160

Unit

25 mg

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USP-1A07340

Ezetimibe 2-Fluorobenzene Isomer ((3R,4S)-1-(4-fluorophenyl)-3-((S)-3-(2-fluorophenyl)-3-hydroxypropyl)-4-(4-hydroxyphenyl)azetidin-2-one)

Item no.

USP-1A07340

CAS Number

[2743547-96-6]

Unit

25 mg

Molecular formula

C24H21F2NO3

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USP-1A07450

1-Propyl Etodolac (8-Ethyl-1,3,4,9-tetrahydro-1-propylpyrano[3,4-b]indole-1-acetic acid)

Item no.

USP-1A07450

Unit

25 mg

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USP-1A07470

Anastrozole Nitrile Acid (2-{3-[(1H-1,2,4-Triazol-1-yl)methyl]-5-(2-cyanopropan-2-yl)phenyl}-2-methylpropanoic acid)

Item no.

USP-1A07470

Unit

25 mg

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USP-1A07540

Deoxybicalutamide (N-[4-Cyano-3-(trifluoromethyl)phenyl]-3-(4-fluorophenylsulfonyl)-2-methylpropanamide)

Item no.

USP-1A07540

Unit

25 mg

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USP-1A07770

1,6-Dehydro Tramadol Hydrochloride (1-(3-Methoxyphenyl)-2-(dimethylaminomethyl) cyclohex-6-ene hydrochloride)

Item no.

USP-1A07770

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-1A07900

2,3-Isosertraline Hydrochloride ((1RS,4RS)-4-(2,3-dichlorophenyl)-N-methyl-1,2,3,4-tetrahydronaphthalen-1-amine hydrochloride)

Item no.

USP-1A07900

Unit

10 mg

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USP-1A07910

Mutilin (3aS,4R,5S,6S,8R,9R,9aR,10R)-6-Ethenyloctahydro-5,8-dihydroxy-4,6,9,10-tetramethyl-3a,9-propano-3aH-cyclopentacycloocten-1(4H)-one)

Item no.

USP-1A07910

Unit

25 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-1A08040

rac-Itraconazole Isopropyl Analog (4-(4-{4-[4-({(2RS,4SR)-2-[(1H-1,2,4-Triazol-1-yl)methyl]-2-(2,4-dichlorophenyl)-1,3-dioxolan-4-yl}methoxy)phenyl]piperazin-1-yl}phenyl)-2-isopropyl-2H-1,2,4-triazol-3(4H)-one)

Item no.

USP-1A08040

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-1A08070

Cloxacillin Penilloic Acid ((4S)-2-((3-(2-Chlorophenyl)-5-methylisoxazole-4-carboxamido)methyl)-5,5-dimethylthiazolidine-4-carboxylic acid)

Item no.

USP-1A08070

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-1A08250

Didehydropimozide (1-{1-[4,4-Bis(4-fluorophenyl)butyl]-1,2,3,6-tetrahydropyridin-4-yl}benzimidazolin-2-one)

Item no.

USP-1A08250

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-1A08400

Desmethoxy Fluvoxamine Maleate ((E)-1-[4-(Trifluoromethyl)phenyl]pentan-1-one O-(2-aminoethyl)oxime maleate)

Item no.

USP-1A08400

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-1A08490

Aminoethyl Fluvoxamine Dihydrochloride ((E)-5-Methoxy-1-[4-(trifluoromethyl)phenyl]pentan-1-one O-{2-[(2-aminoethyl)amino]ethyl}oxime dihydrochloride)

Item no.

USP-1A08490

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-1A08570

Acridine Carboxylic Acid Hydrate (Acridine-9-carboxylic acid hydrate)

Item no.

USP-1A08570

Unit

25 mg

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