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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

976 products found

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USP-1A01010

Olanzapine lactam ((Z)-4-(4-methylpiperazin-1-yl)-3-(2-oxopropylidene)-1,3-dihydro-2H-benzo[b][1,4]diazepin-2-one)

Item no.

USP-1A01010

CAS Number

[1017241-34-7]

Unit

25 mg

Molecular formula

C17H20N4O2

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USP-1A01460

Rivaroxaban Open Chain Dithiophene Analog ((S)-5-chloro-N-(4-(5-((5-chlorothiophene-2-carboxamido)methyl)-2-oxooxazolidin-3-yl)phenyl)-N-(2-(2-(methylamino)-2-oxoethoxy)ethyl)thiophene-2-carboxamide)

Item no.

USP-1A01460

CAS Number

[1807455-76-0]

Unit

10 mg

Molecular formula

C25H24Cl2N4O6S2

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USP-1A02060

trans-Cholecalciferol (COLD SHIPMENT REQUIRED)

Item no.

USP-1A02060

CAS Number

[22350-41-0]

Unit

25 mg

Molecular formula

C27H44O

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USP-1A02340

Lactosyl Pregabalin Pyrrolidone ((S)-1-((2R,3R,4R,5S,6R)-3,4-dihydroxy-6-(hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)-4-isobutylpyrrolidin-2-one)

Item no.

USP-1A02340

CAS Number

[466678-44-4]

Unit

25 mg

Molecular formula

C20H35NO11

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USP-1A04020

1-Methyl-4-nitrosopiperazine (MNP) Solution (1 mg/mL in Methanol) (1-Methyl-4-nitrosopiperazine)

Item no.

USP-1A04020

CAS Number

[16339-07-4]

Unit

1 mL

Molecular formula

C5H11N3O

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USP-1A06210

Lignan P Phosphate

Item no.

USP-1A06210

Unit

25 mg

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USP-1A06560

Piperacillin penilloic acid ((4S)-2-[[[(2R)-2-[[(4-Ethyl-2,3-dioxo-1-piperazinyl)carbonyl]amino]-2-phenylacetyl]amino]methyl]-5,5-dimethyl-4-thiazolidinecarboxylic acid)

Item no.

USP-1A06560

CAS Number

[2649505-15-5]

Unit

10 mg

Molecular formula

C22H29N5O6S

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USP-1A07150

Rosuvastatin Sodium Benzoquinazoline Analog (Sodium (3R,5S)-5-((S)-8-fluoro-4-isopropyl-2-(N-methylmethylsulfonamido)-5,6-dihydrobenzo[h]quinazolin-6-yl)-3,5-dihydroxypentanoate)

Item no.

USP-1A07150

Unit

25 mg

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USP-1A07420

Deschloroclomiphene Chlorophenyl Citrate Analog ((E,Z)-2-{4-[1,2-Bis(4-chlorophenyl)vinyl]phenoxy}-N,N-diethylethan-1-amine citrate) (part of promotion Clomiphene bundle)

Item no.

USP-1A07420

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-1A08060

Clomiphene Benzophenone Analog ([4-[2-(Diethylamino)ethoxy]phenyl]phenylmethanone) (part of promotion Clomiphene bundle)

Item no.

USP-1A08060

Unit

25 mg

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USP-1A08390

Methylbis(2-pyridylethyl)amine Hydrochloride (N-Methyl-N,N-bis(2-pyridin-2-yl-ethyl)amine trihydrochloride) (part of promotion Betahistine bundle)

Item no.

USP-1A08390

Unit

25 mg

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USP-1A08550

Mycophenolate O-Methyl analog (2-Morpholinoethyl(E)-6-(1,3-dihydro-4,6-dimethoxy-7-methyl-3-oxo-5-isobenzofuranyl)-4-methyl-4-hexenoate)

Item no.

USP-1A08550

Unit

25 mg

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USP-1A08660

N-Despropyl Propafenone Hydrochloride (2'-(2-Hydroxy-3-aminopropoxy)-3-phenylpropiophenone hydrochloride)

Item no.

USP-1A08660

Unit

25 mg

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USP-1A09140

N-Nitroso Salmeterol Solution (1 mg/mL in Acetonitrile) (N-(2-hydroxy-2-(4-hydroxy-3-(hydroxymethyl)phenyl)ethyl)-N-(6-(4-phenylbutoxy)hexyl)nitrous amide)

Item no.

USP-1A09140

Unit

1 mL

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USP-1A09400

N,N'-Dinitroso Benzathine Solution (1 mg/mL in Methanol) (N1,N2-Dinitroso-N1,N2-bis(phenylmethyl)-1,2-ethanediamine)

Item no.

USP-1A09400

Unit

1 mL

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USP-1A10710

9-Bromo Betamethasone Dipropionate (9-Bromo-11beta-hydroxy-16beta-methyl-3,20-dioxopregna-1,4-diene-17,21-diyl dipropionate)

Item no.

USP-1A10710

Unit

25 mg

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USP-1A10720

6alpha-Bromo Beclomethasone Dipropionate (6alpha-Bromo-9-chloro-11beta-hydroxy-16beta-methyl-3,20-dioxopregna-1,4-diene-17,21-diyl dipropionate)

Item no.

USP-1A10720

Unit

25 mg

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USP-1A10730

Beclomethasone Tripropionate (9-Chloro-16beta-methyl-3,20-dioxopregna-1,4-diene-11beta,17,21-triyl tripropionate)

Item no.

USP-1A10730

Unit

25 mg

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USP-1A10760

Caffeidine Hydrochloride (N-1-Dimethyl-4-(methylamino)-1H-imidazole-5-carboxamide hydrochloride)

Item no.

USP-1A10760

Unit

25 mg

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USP-1A10770

Prednisolone Diene (21-Hydroxypregna-1,4,9(11),16-tetraene-3,20-dione)

Item no.

USP-1A10770

Unit

25 mg

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USP-1A10800

Hydrocortisone 11,21-diacetate (17-Hydroxy-3,20-dioxopregn-4-ene-11beta,21-diyl diacetate)

Item no.

USP-1A10800

Unit

25 mg

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USP-1A10910

Bisaminoethoxy Amlodipine (3-Ethyl 5-methyl 2,6-bis[(2-aminoethoxy)methyl]- 4-(2-chlorophenyl)-1,4-dihydropyridine-3,5-dicarboxylate)

Item no.

USP-1A10910

Unit

25 mg

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USP-1A10940

Hydroxyethyl Phthalyl Amlodipine (3-Ethyl 5-methyl 4-(2-chlorophenyl)-2-{[2-(2-[(2-hydroxyethyl)carbamoyl]benzamido)ethoxy]methyl}-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate)

Item no.

USP-1A10940

Unit

25 mg

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USP-1A10960

Beclomethasone 21-Butyrate 17-Propionate (9-Chloro-11beta-hydroxy-16beta-methyl-3,20-dioxo-17-propionyloxypregna-1,4-diene-21-yl butyrate)

Item no.

USP-1A10960

Unit

25 mg

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USP-1A10980

5-Chloro Bupropion Hydrochloride (2-(tert-Butylamino)-1-(3,5-dichlorophenyl)propan-1-one hydrochloride)

Item no.

USP-1A10980

Unit

25 mg

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USP-1A10990

Bupropion Amine Tosylate (2-Amino-1-(3-chloro-phenyl)-1-propanone 4-methylbenzenesulfonate)

Item no.

USP-1A10990

Unit

25 mg

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USP-1A11010

Chlorthalidone Ethyl Ether (2-Chloro-5-(1-ethoxy-3-oxoisoindolin-1-yl)benzenesulfonamide)

Item no.

USP-1A11010

Unit

25 mg

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USP-1A11020

Deoxy Chlorthalidone (2-Chloro-5-(3-oxoisoindolin-1-yl)benzenesulfonamide)

Item no.

USP-1A11020

Unit

25 mg

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USP-1A11030

Dichloro Chlorthalidone (3-(3,4-Dichlorophenyl)-3-hydroxyisoindolin-1-one)

Item no.

USP-1A11030

Unit

25 mg

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USP-1A11040

Chlorthalidone Isopropyl Ether (2-Chloro-5-(1-isopropoxy-3-oxoisoindolin-1-yl)benzenesulfonamide)

Item no.

USP-1A11040

Unit

25 mg

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USP-1A11050

Isopropyl Benzoylbenzoate Sulfonamide (Isopropyl 2-(4-chloro-3-sulfamoylbenzoyl)benzoate)

Item no.

USP-1A11050

Unit

25 mg

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USP-1A11060

Dessulfonamide Chlorthalidone (3-(4-Chlorophenyl)-3-hydroxyisoindolin-1-one)

Item no.

USP-1A11060

Unit

25 mg

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USP-1A11080

Hydrocortisone 17-Acetate (11beta,21-Dihydroxy-3,20-dioxopregna-4-en-17-yl acetate)

Item no.

USP-1A11080

Unit

25 mg

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USP-1A11160

Metronidazole Acid 4-Nitro Isomer ((2-Methyl-4-nitro-1H-imidazol-1-yl)acetic acid)

Item no.

USP-1A11160

Unit

25 mg

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USP-1A11170

Nicardipine N-Oxide (N-Benzyl-2-{[5-(methoxycarbonyl)-2,6-dimethyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carbonyl]oxy}-N-methylethan-1-amine oxide)

Item no.

USP-1A11170

Unit

25 mg

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USP-1A11190

3-O-Allyl Naloxone (4,5alpha-Epoxy-14-hydroxy-17-(prop-2-enyl)-3-(prop-2-enyloxy)morphinan-6-one)

Item no.

USP-1A11190

Unit

25 mg

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USP-1A11430

5,6,7,8-Tetradehydro Risperidone (3-[2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]ethyl]-2-methylpyrido[1,2-a]pyrimidin-4-one)

Item no.

USP-1A11430

Unit

25 mg

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USP-1A11440

Rufinamide 5-Carboxamide (1-(2,6-Difluorobenzyl)-1H-1,2,3-triazole-5-carboxamide)

Item no.

USP-1A11440

Unit

25 mg

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USP-1A11500

Beclomethasone 4,6-diene (9-Chloro-11beta-hydroxy-16beta-methyl-3,20-dioxopregna-4,6-diene-17,21-diyl dipropionate)

Item no.

USP-1A11500

Unit

25 mg

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USP-1A11510

11-Chloro Beclomethasone Dipropionate (9,11beta-Dichloro-16beta-methyl-3,20-dioxopregna-1,4-diene-17,21-diyl dipropionate)

Item no.

USP-1A11510

Unit

25 mg

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USP-1A11560

Clindamycin Tetradecanoate Hydrochloride (Methyl 7-chloro-6,7,8-trideoxy-6-(1-methyl-trans-4-propyl-L-2-pyrrolidinecarboxamido)-1-thio-L-threo-alpha-D-galacto-octopyranoside 2-tetradecanoate monohydrochloride)

Item no.

USP-1A11560

Unit

25 mg

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USP-1A11650

Cortodoxone (17,21-Dihydroxypregn-4-ene-3,20-dione)

Item no.

USP-1A11650

Unit

25 mg

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USP-1A11770

Isometronidazole (2-(2-methyl-4-nitroimidazol-1-yl)ethanol)

Item no.

USP-1A11770

Unit

25 mg

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USP-1A11780

11-Deoxy Prednisolone (17,21-Dihydroxypregna-1,4-diene-3,20-dione)

Item no.

USP-1A11780

Unit

25 mg

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USP-1A11840

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

Item no.

USP-1A11840

Unit

25 mg

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USP-1A11960

(2S,4R)-Sacubitril (4-(((2R,4S)-1-([1,1'-biphenyl]-4-yl)-5-ethoxy-4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoic acid)

Item no.

USP-1A11960

Unit

25 mg

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USP-1A12050

2-Methoxy Apixaban (1-(2-methoxyphenyl)-7-oxo-6-(4-(2-oxopiperidin-1-yl)phenyl)-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide)

Item no.

USP-1A12050

Unit

25 mg

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USP-1A12100

Sacubitril Maleicamide ((Z)-4-(((2S,4R)-1-([1,1'-biphenyl]-4-yl)-5-ethoxy-4-methyl-5-oxopentan-2-yl)amino)-4-oxobut-2-enoic acid)

Item no.

USP-1A12100

Unit

25 mg

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USP-1A12430

Pazopanib 2-chloropyrimidine (N-(2-Chloropyrimidin-4-yl)-N,2,3-trimethyl-2H-indazol-6-amine)

Item no.

USP-1A12430

Unit

25 mg

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