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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

991 products found

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USP-1A01950

Dimethylacrylamide tolyl ketone ((2E)-N,N-dimethyl-4-(4-methylphenyl)-4-oxobut-2-enamide)

Item no.

USP-1A01950

Unit

25 mg

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USP-1A02040

(4-Methylbenzoyl)trifluoroacetone (1,1,1-Trifluoro-4-hydroxy-4-(4-methylphenyl)-3-buten-2-one)

Item no.

USP-1A02040

CAS Number

[910303-54-7]

Unit

25 mg

Molecular formula

C11H9F3O2

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USP-1A02550

Aripiprazole Hydroxydihydroquinolinone Analog (7-hydroxy-3,4-dihydroquinolin-2(1H)-one)

Item no.

USP-1A02550

CAS Number

[22246-18-0]

Unit

25 mg

Molecular formula

C9H9NO2

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USP-1A02590

1,4-Bis(4-(2,3-dichlorophenyl)piperazin-1-yl)butane dihydrochloride (1,4-bis(4-(2,3-dichlorophenyl)piperazin-1-yl)butane, hydrochloride)

Item no.

USP-1A02590

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C24H30Cl4N4. 2 HCl

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USP-1A02690

E-Cefepime (1-({(6R,7R)-7-[(E)-2-(2-Aminothiazol-4-yl)-2-(methoxyimino)acetamido]-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl}methyl)-1-methylpyrrolidinium chloride)

Item no.

USP-1A02690

Unit

25 mg

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USP-1A02760

3-Carboxyphenylacetonitrile (3-(Cyanomethyl)benzoic acid)

Item no.

USP-1A02760

CAS Number

[5689-33-8]

Unit

25 mg

Molecular formula

C9H7NO2

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USP-1A02780

2,4,5-Trimethylketoprofen (COLD SHIPMENT REQUIRED) ((2RS)-2-[3-(2,4,5-Trimethylbenzoyl)phenyl]propanoic Acid)

Item no.

USP-1A02780

CAS Number

[1797984-80-5]

Unit

25 mg

Molecular formula

C19H20O3

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USP-1A03020

(3S,4S)-Paroxol (((3S, 4S)-4-(4-fluorophenyl)-1-methylpiperidin-3-yl)methanol)

Item no.

USP-1A03020

CAS Number

[100332-20-5]

Unit

25 mg

Molecular formula

C13H18FNO

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USP-1A03030

(3R,4R)-Paroxol (((3R,4R)-4-(4-fluorophenyl)-1-methylpiperidin-3-yl)methanol)

Item no.

USP-1A03030

CAS Number

[100332-12-5]

Unit

25 mg

Molecular formula

C13H18FNO

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USP-1A03050

Paroxetine Methoxy Analog ((3R,4S)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4-methoxyphenyl)piperidine, hydrochloride)

Item no.

USP-1A03050

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C20H23NO4. HCl

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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-1A03130

Ivabradine Open Ring ((S)-2-(2-(2-((3-(((3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)(methyl)amino)propyl)amino)ethyl)-4,5-dimethoxyphenyl)acetic acid)

Item no.

USP-1A03130

CAS Number

[1462470-54-7]

Unit

25 mg

Molecular formula

C27H38N2O6

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USP-1A03200

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

Item no.

USP-1A03200

CAS Number

[2253977-80-7]

Unit

25 mg

Molecular formula

C27H36N2O6

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USP-1A03210

2-{4-[(methylamino)methyl]thiazol-2-yl}propan-2-ol hydrochloride (2-(4-((methylamino)methyl)thiazol-2-yl)propan-2-ol, hydrochloride)

Item no.

USP-1A03210

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C8H14N2OS. 2HCl

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USP-1A03220

(S)-2-Amino-4-morpholinobutanoic acid hydrochloride ((S)-2-amino-4-morpholinobutanoic acid, hydrochloride)

Item no.

USP-1A03220

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C8H16N2O3. HCl

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USP-1A03260

Dibenzazepinodione (5H-dibenzo[b,f]azepine-10,11-dione)

Item no.

USP-1A03260

CAS Number

[19579-83-0]

Unit

50 mg

Molecular formula

C14H9NO2

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USP-1A03310

O-Desmethylmetoprolol (1-(4-(2-hydroxyethyl)phenoxy)-3-(isopropylamino)propan-2-ol)

Item no.

USP-1A03310

Unit

25 mg

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USP-1A03340

Varenicline Formamide (6,7,9,10-tetrahydro-8H-6,10-methanoazepino[4,5-g]quinoxaline-8-carbaldehyde)

Item no.

USP-1A03340

Unit

25 mg

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USP-1A03360

N-Methyl Varenicline (7,8,9,10-tetrahydro-8-methyl-6,10-Methano-6H-pyrazino[2,3-h][3]benzazepine)

Item no.

USP-1A03360

Unit

25 mg

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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-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-1A03440

Abiraterone Ethyl Ether (3-((3S,8R,9S,10R,13S,14S)-3-ethoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)pyridine)

Item no.

USP-1A03440

Unit

25 mg

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USP-1A03470

O-Acetyl Bosentan (2-((6-((4-(tert-butyl)phenyl)sulfonamido)-5-(2-methoxyphenoxy)-[2,2'-bipyrimidin]-4-yl)oxy)ethyl acetate)

Item no.

USP-1A03470

Unit

25 mg

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USP-1A03480

Bosentan Bis4(tert-butylbenzenesulfonamide) (N,N'-(5-(2-methoxyphenoxy)-[2,2'-bipyrimidine]-4,6-diyl)bis(4-(tert-butyl)benzenesulfonamide))

Item no.

USP-1A03480

Unit

25 mg

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USP-1A03530

3-Deoxy 3-Chloroabiraterone (3Beta-Chloro-17-(pyridin-3-yl)androsta-5,16-diene)

Item no.

USP-1A03530

Unit

25 mg

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USP-1A03580

6-Keto Fulvestrant ((7Alpha,17Beta)-7-[9-[4,4,5,5,5-pentafluoropentyl)sulfinyl]nonyl]-3,17Beta-dihydroxyestra-1,3,5(10)-trien-6-one, 7Alpha-{9-[(4,4,5,5,5,-Pentafluoropentyl)sulfinyl]nonyl}estra-1,3,5(10)-triene-6-one-3,17Beta-diol)

Item no.

USP-1A03580

Unit

25 mg

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USP-1A03590

5-Chloro Hydrochlorothiazide (5,6-dichloro-3,4-dihydro-2H-benzo[e][1,2,4]thiadiazine-7-sulfonamide 1,1-dioxide)

Item no.

USP-1A03590

Unit

25 mg

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USP-1A03600

Mebetide (3-methyl-2H-benzo[e][1,2,4]thiadiazine 1,1-dioxide)

Item no.

USP-1A03600

Unit

25 mg

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USP-1A03610

R,R-Lamivudine (4-amino-1-((2R,5R)-2-(hydroxymethyl)-1,3-oxathiolan-5-yl)pyrimidin-2(1H)-one

Item no.

USP-1A03610

Unit

25 mg

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USP-1A03620

N-Methyl Lenalidomide (3-(4-(methylamino)-1-oxoisoindolin-2-yl)piperidine-2,6-dione)

Item no.

USP-1A03620

CAS Number

[2197421-58-0]

Unit

25 mg

Molecular formula

C14H15N3O3

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USP-1A03630

Clarithromycin E-Oxime (COLD SHIPMENT REQUIRED)

Item no.

USP-1A03630

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-1A03670

Fulvestrant sulfone ((7R,8R,9S,13S,14S,17S)-13-methyl-7-(9-((4,4,5,5,5-pentafluoropentyl)sulfonyl)nonyl)7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,17-diol)

Item no.

USP-1A03670

Unit

25 mg

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USP-1A03720

Dithienyl glycolic acid (2-hydroxy-2,2-di(thiophen-2-yl)acetic acid)

Item no.

USP-1A03720

Unit

25 mg

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USP-1A03730

Dabigatran Etexilate Acid (3-(2-(((4-(N-((hexyloxy)carbonyl)carbamimidoyl)phenyl)amino)methyl)-1-methyl-N-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)propanoic acid)

Item no.

USP-1A03730

Unit

25 mg

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USP-1A03750

Dabigatran Heptane-2-yl Analog (ethyl 3-(2-(((4-(N-((heptan-2-yloxy)carbonyl)carbamimidoyl)phenyl)amino)methyl)-1-methyl-N-(pyridin-2-yl)-1H-benzo[d]imidazole-5-carboxamido)propanoate)

Item no.

USP-1A03750

Unit

25 mg

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USP-1A03850

Vilanterol Trifenatate S-Enantiomer ((S)-4-(2-((6-(2-((2,6-dichlorobenzyl)oxy)ethoxy)hexyl)amino)-1-hydroxyethyl)-2-(hydroxymethyl)phenol 2,2,2-triphenylacetate)

Item no.

USP-1A03850

Unit

25 mg

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USP-1A03950

N-Nitrosopiperidine Solution (1 mg/mL in Methanol) (1-Nitrosopiperidine)

Item no.

USP-1A03950

Unit

1 mL

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USP-1A04060

N-Nitrosopyrrolidine (NPYR) Solution (1 mg/mL in Methanol) (1-Nitrosopyrrolidine))

Item no.

USP-1A04060

Unit

1 mL

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USP-1A04080

1-(2-Methoxyphenyl)-4-nitrosopiperazine Solution (1 mg/mL in Methanol) (1-(2-Methoxyphenyl)-4-nitrosopiperazine)

Item no.

USP-1A04080

Unit

1 mL

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USP-1A04190

1-Cyclopentyl-4-nitrosopiperazine (CPNP) Solution (1 mg/mL in Methanol) (1-Cyclopentyl-4-nitrosopiperazine)

Item no.

USP-1A04190

Unit

1 mL

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USP-1A04310

Sugammadex Sodium Sulfone (6A,6B,6C,6D,6E,6F,6G,6H-octadeoxy-6A,6B,6C,6D,6E,6F,6G,6H-octaki-gamma-Cyclodextrin, sodium salt)

Item no.

USP-1A04310

Unit

10 mg

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USP-1A04330

3-Methyl Formoterol (N-(2-hydroxy-5-(1-hydroxy-2-((1-(4-methoxy-3-methylphenyl)propan-2-yl)amino)ethyl)phenyl)formamide)

Item no.

USP-1A04330

Unit

50 mg

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USP-1A04400

N-Nitrosoiminodiacetic acid (2,2'-(nitrosoazanediyl)diacetic acid)

Item no.

USP-1A04400

Unit

10 mg

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USP-1A04500

L-Glucono-delta-lactone ((3S,4R,5R,6S)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-one)

Item no.

USP-1A04500

Unit

25 mg

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USP-1A06180

Atazanavir Sulfate Valine Analog (methyl ((5S,10S,11S,14S)-11-benzyl-5-(tert-butyl)-10-hydroxy-15-methyl-3,6,13-trioxo-8-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,8,12-tetraazahexadecan-14-yl)carbamate sulfate)

Item no.

USP-1A06180

Unit

25 mg

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USP-1A08850

N-Nitroso Piperazine Solution (1 mg/mL in Methanol) (1-nitrosopiperazine)

Item no.

USP-1A08850

Unit

1 mL

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USP-1A08890

N-Nitroso Cinacalcet Solution (1 mg/mL in Methanol) ((R)-N-(1-(naphthalen-1-yl)ethyl)-N-(3-(3-(trifluoromethyl)phenyl)propyl)nitrous amide)

Item no.

USP-1A08890

Unit

1 mL

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USP-1A09170

N-Nitroso Tetracaine Solution (1 mg/mL in Acetonitrile) (2-(dimethylamino)ethyl 4-(butyl(nitroso)amino)benzoate)

Item no.

USP-1A09170

Unit

1 mL

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