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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

1025 products found

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USP-1A01440

Ticlopidine Pyridinium Analog (5-(2-chlorobenzyl)thieno[3,2-c]pyridin-5-ium, chloride)

Item no.

USP-1A01440

CAS Number

[53885-64-6]

Unit

25 mg

Molecular formula

C14H11Cl2NS

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USP-1A01550

Rivaroxaban Open Ring S-isomer ((S)-5-chloro-N-(2-hydroxy-3-((4-(3-oxomorpholino)phenyl)amino)propyl)thiophene-2-carboxamide)

Item no.

USP-1A01550

CAS Number

[1325210-62-5]

Unit

25 mg

Molecular formula

C18H20ClN3O4S

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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-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-1A02410

Aripiprazole di(quinolinonylbutyl) ether analog (7,7'-((oxybis(butane-4,1-diyl))bis(oxy))bis(3,4-dihydroquinolin-2(1H)-one))

Item no.

USP-1A02410

CAS Number

[1424858-02-5]

Unit

25 mg

Molecular formula

C26H32N2O5

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USP-1A02580

N1-(2-Chloroethyl)-N2-(2,3-dichlorophenyl)ethane-1,2-diamine hydrochloride (N1-(2-chloroethyl)-N2-(2,3-dichlorophenyl)ethane-1,2-diamine, hydrochloride)

Item no.

USP-1A02580

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C10H13Cl3N2. HCl

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USP-1A02610

Sitagliptin Styrylacetyl Analog ((E)-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)but-3-en-1-one)

Item no.

USP-1A02610

CAS Number

[1803026-58-5]

Unit

25 mg

Molecular formula

C16H12F6N4O

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USP-1A02710

Cisatracurium Besylate cis-Quaternary Acid (COLD SHIPMENT REQUIRED) ((1R,2R)-2-(2-carboxyethyl)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-iumbenzenesulfonate)

Item no.

USP-1A02710

Unit

25 mg

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USP-1A03070

Piperazinedionecarbonyl D-phenylglycylglycine ((R)-(2-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)-2-phenylacetyl) glycine)

Item no.

USP-1A03070

CAS Number

[2170771-47-6]

Unit

25 mg

Molecular formula

C17H20N4O6

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USP-1A03380

5-Hydroxy Lenalidomide (3-(4-amino-5-hydroxy-1-oxoisoindolin-2-yl)piperidine-2,6-dione)

Item no.

USP-1A03380

Unit

25 mg

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USP-1A03400

Bortezomib L-phenylalanyl analog (COLD SHIPMENT REQUIRED) (((R)-3-methyl-1-((S)-3-phenyl-2-((S)-3-phenyl-2-(pyrazine-2-carboxamido)propanamido)propanamido)butyl)boronic acid)

Item no.

USP-1A03400

Unit

25 mg

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USP-1A03660

N-Acetyl Lenalidomide (N-(2-(2,6-dioxopiperidin-3-yl)-1-oxoisoindolin-4-yl)acetamide)

Item no.

USP-1A03660

Unit

25 mg

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USP-1A03800

Lenvatinib N-Oxide (6-carbamoyl-4-(3-chloro-4-(3-cyclopropylureido)phenoxy)-7-methoxyquinoline 1-oxide)

Item no.

USP-1A03800

Unit

25 mg

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USP-1A03860

Vilanterol Trifenatate Dioxin ((alphaR)-alpha-[[[6-[2-[(2,6- Dichlorophenyl)methoxy] ethoxy]hexyl] amino]methyl]-2,2-dimethyl-4H-1,3-benzodioxin-6-methanol, triphenylacetate)

Item no.

USP-1A03860

Unit

50 mg

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USP-1A04340

8-Desmethyl Ivabradine Hydrochloride ((S)-3-(3-(((3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)(methyl)amino)propyl)-8-hydroxy-7-methoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one, hydrochloride)

Item no.

USP-1A04340

Unit

25 mg

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USP-1A04490

3-Acetamidophthalic acid (3-acetamidophthalic acid)

Item no.

USP-1A04490

Unit

25 mg

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USP-1A04510

Canagliflozin Tetraacetate ((2R,3R,4R,5S,6S)-2-(acetoxymethyl)-6-(3-((5-(4-fluorophenyl)thiophen-2-yl)methyl)-4-methylphenyl)tetrahydro-2H-pyran-3,4,5-triyl triacetate)

Item no.

USP-1A04510

Unit

25 mg

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USP-1A04560

Sugammadex Sodium Sulfoxide (6A,6B,6C,6D,6E,6F,6G,6H-octadeoxy-6A,6B,6C,6D,6E,6F,6G,6H-octakis[(2-carboxyethyl)sulfinyl]-gamma-Cyclodextrin, sodium salt)

Item no.

USP-1A04560

Unit

10 mg

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USP-1A04630

Fluticasone Propionate Thioacid ((6alpha,11Beta,16alpha,17alpha)-6,9-Difluoro-11-hydroxy-16-methyl-3-oxo-17-(1-oxopropoxy)androsta-1,4-diene-17-carbothioic acid)

Item no.

USP-1A04630

Unit

25 mg

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USP-1A04670

1,3-Dimethyl-6-nitroindazole (1,3-dimethyl-6-nitro-1H-indazole)

Item no.

USP-1A04670

Unit

25 mg

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USP-1A04680

3-Amino-4-tolylsulfonamide (3-amino-4-methylbenzenesulfonamide)

Item no.

USP-1A04680

Unit

25 mg

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USP-1A04760

Rac-Trans-4-Hydroxy Tolvaptan (rel-N-(4-((4S,5S)-7-chloro-4,5-dihydroxy-2,3,4,5-tetrahydro-1H-benzo[b]azepine-1-carbonyl)-3-methylphenyl)-2-methylbenzamide)

Item no.

USP-1A04760

Unit

10 mg

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USP-1A04770

Ketovarenicline Trifluoroacetate (rel-(6S,10R)-8-(2,2,2-trifluoroacetyl)-1,6,7,8,9,10-hexahydro-2H-6,10-methanoazepino[4,5-g]quinoxalin-2-one)

Item no.

USP-1A04770

Unit

25 mg

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USP-1A04820

4-Phenylbutyl(benzyl)amine hydrochloride (N-benzyl-4-phenylbutan-1-amine, hydrochloride)

Item no.

USP-1A04820

Unit

25 mg

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USP-1A04880

3-Methyl-7-(2-butyn-1-yl)-8-bromoxanthine (8-bromo-7-(but-2-yn-1-yl)-3-methyl-3,7-dihydro-1H-purine-2,6-dione)

Item no.

USP-1A04880

Unit

25 mg

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USP-1A04960

endo-Lurasidone ((3aR,4R,7S,7aS)-2-{[1R,2R]-2-[4-(1,2-benzisothiazol-3-yl)-piperazin-1-yl-methyl]-cyclohexyl methyl}hexahydro-4,7-methano-2H-isoindole-1,3-dione)

Item no.

USP-1A04960

Unit

25 mg

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USP-1A04970

2-(5-Iodo-2-methylbenzyl)-5-phenylthiophene (COLD SHIPMENT REQUIRED) (2-(5-iodo-2-methylbenzyl)-5-phenylthiophene)

Item no.

USP-1A04970

Unit

25 mg

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USP-1A06060

Lignan P ((5R,5aR,8aR,9S)-9-(beta-D-glucopyranosyloxy)-5-(4-hydroxy-3,5-dimethoxy phenyl) -5,8,8a,9 -tetrahydro[2]benzofuro-[5,6-f][1,3]benzodioxol-6(5aH)-one)

Item no.

USP-1A06060

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-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-1A06470

4-Chloro Bupropion Hydrochloride (2-(tert-Butylamino)-1-(3,4-dichlorophenyl)propan-1-one hydrochloride)

Item no.

USP-1A06470

Unit

25 mg

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USP-1A06590

Phenothiazine sulfoxide (5-Oxophenothiazine)

Item no.

USP-1A06590

Unit

25 mg

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USP-1A06920

Rabeprazole Methoxy Analog (2-(((4-methoxy-3-methylpyridin-2-yl)methyl)sulfinyl)-1H-benzo[d]imidazole, 2-{[(4-Methoxy-3-methylpyridin-2-yl)methyl]sulfinyl}benzimidazole)

Item no.

USP-1A06920

Unit

25 mg

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USP-1A07280

2'-Deoxyadenosine ((2R,5R)-5-(6-amino-9H-purin-9-yl)-2-(hydroxymethyl)oxolan-3-ol)

Item no.

USP-1A07280

Unit

25 mg

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USP-1A11420

Risperidone Pyridopyrimidinone Analog (3-(2-Chloroethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one)

Item no.

USP-1A11420

Unit

25 mg

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USP-1A11600

Omeprazole Dihydropyridine (1-(5-Methoxy-1H-benzimidazol-2-yl)-3,5-dimethyl-4-oxo-1,4-dihydropyridine-2-carboxylic acid)

Item no.

USP-1A11600

Unit

25 mg

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USP-1A11890

Tazobactam Diphenylmethyl Ester (Benzhydryl (2S,3S,5R)-3-((1H-1,2,3-triazol-1-yl)methyl)-3-methyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate 4,4-dioxide)

Item no.

USP-1A11890

Unit

25 mg

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USP-1A12460

Pazopanib Sulphonamide Isomer (5-Amino-N-{4-[(2,3-dimethyl-2H-indazol-6-yl)(methyl)amino]pyrimidin-2-yl}-2-methylbenzenesulfonamide)

Item no.

USP-1A12460

Unit

25 mg

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USP-1A12610

N-Ethyl Esmolol (Methyl 3-{4-[3-(ethylamino)-2-hydroxypropoxy]phenyl}propionate)

Item no.

USP-1A12610

Unit

25 mg

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USP-1A12630

Empagliflozin Aglycon Phenol ((S)-4-Chloro-3-{4-[(tetrahydrofuran-3-yl)oxy]benzyl}phenol)

Item no.

USP-1A12630

Unit

25 mg

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USP-1A12670

3-Phenylpyrazin-2-ol (3-Phenylpyrazin-2-ol)

Item no.

USP-1A12670

Unit

25 mg

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USP-1A12910

Dolutegravir Ethyl Ether ((4R,12aS)-N-(2,4-difluorobenzyl)-7-ethoxy-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxamide)

Item no.

USP-1A12910

Unit

25 mg

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USP-1A12930

2,6-Difluoro Dolutegravir ((4R,12aS)-N-(2,6-difluorobenzyl)-7-hydroxy-4-methyl-6,8-dioxo-3,4,6,8,12,12a-hexahydro-2H-pyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazine-9-carboxamide)

Item no.

USP-1A12930

Unit

25 mg

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USP-1A13240

N-Ethylmeloxicam ((N-[3-Ethyl-5-methylthiazol-2(3H)-ylidene]-4-hydroxy-2-methyl-2H-benzo[e][1,2]thiazine-3-carboxamide 1,1-dioxide))

Item no.

USP-1A13240

Unit

25 mg

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USP-1A13250

Levothyroxine Benzamide (4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzamide)

Item no.

USP-1A13250

Unit

25 mg

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USP-1A13310

Hydroxy Ibuprofen (2-[4-(1-Hydroxy-2-methylpropyl)phenyl]propanoic acid)

Item no.

USP-1A13310

Unit

25 mg

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USP-1A13350

N-Carbamoylcarbamazepine (N-Carbamoyl-5H-dibenzo[b,f]azepine-5-carboxamide)

Item no.

USP-1A13350

Unit

25 mg

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USP-1A13370

Propofol 4-Carboxylic Acid (4-Hydroxy-3,5-diisopropylbenzoic acid)

Item no.

USP-1A13370

Unit

25 mg

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USP-1A13570

Propofol Isopropyl 4-Carboxylate (Isopropyl 4-hydroxy-3,5-diisopropylbenzoate)

Item no.

USP-1A13570

Unit

25 mg

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USP-1A13800

Despropenepyridine Axitinib Sulfoxide (2-[(1H-Indazol-6-yl)sulfinyl]-N-methylbenzamide)

Item no.

USP-1A13800

Unit

25 mg

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