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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

1527 products found

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USP-1A00790

Atorvastatin Calcium Epoxy Pyrrolooxazin 7-Hydroxy Analog (Calcium 4-(1b-(4-fluorophenyl)-7-hydroxy-7-isopropyl-1a-phenyl-7a-(phenylcarbamoyl)hexahydro-3H-oxireno[2',3':3,4]pyrrolo[2,1-b][1,3]oxazin-3-yl)-3-hydroxybutanoate)

Item no.

USP-1A00790

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C66H68CaF2N4O14 (2C33H34CFN2O7.Ca)

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USP-1A00820

Atorvastatin Pyrrolidone Lactone (5-(4-Fluorophenyl)-1-{2-[(2R,4R)-4-hydroxy-6-oxotetrahydro-2H-pyran-2-yl]ethyl}-3-isopropyl-2-oxo-N,4-diphenyl-2,3-dihydro-1H-pyrrole-3-carboxamide)

Item no.

USP-1A00820

CAS Number

[906552-19-0]

Unit

25 mg

Molecular formula

C33H33FN2O5

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USP-1A01100

Deoxystreptamine Kanosaminide (6-O-(3-Amino-3-deoxy-alpha-D-glucopyranosyl)-2-deoxy-D-streptamine)

Item no.

USP-1A01100

CAS Number

[20744-51-8]

Unit

25 mg

Molecular formula

C12H25N3O7

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USP-1A02380

rac-Pregabalin Imide Dimer Amide (3-((3-(aminomethyl)-5-methylhexanamido)methyl)-5-methylhexanoic acid)

Item no.

USP-1A02380

CAS Number

[1486961-58-3]

Unit

25 mg

Molecular formula

C16H32N2O3

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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-1A02620

Sitagliptin (R)-Triazecine Analog ((R)-10-(2,4,5-trifluorobenzyl)-3-(trifluoromethyl)-6,7,10,11-tetrahydro-[1,2,4]triazolo[3,4-c][1,4,7]triazecine-8,12(5H,9H)-dione)

Item no.

USP-1A02620

CAS Number

[2088771-61-1]

Unit

25 mg

Molecular formula

C16H13F6N5O2

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USP-1A02750

2-(3-Carboxyphenyl)propionitrile (2-(3-Carboxyphenyl)propionitrile)

Item no.

USP-1A02750

CAS Number

[5537-71-3]

Unit

25 mg

Molecular formula

C10H9NO2

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USP-1A02890

Guanylmelamine Dinitrate (1-(4,6-diamino-1,3,5-triazin-2-yl)guanidine, nitrate)

Item no.

USP-1A02890

CAS Number

[27369-26-2]

Unit

25 mg

Molecular formula

C4H8N8. 2 HNO3

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USP-1A02960

N-Desmethyl Ivabradine Hydrochloride (3-[3-[[[(7S)-3,4-dimethoxybicyclo[4.2.0]octa-1,3,5-trien-7-yl]methyl]amino]propyl]-1,3,4,5-tetrahydro-7,8-dimethoxy-2H-3-benzazepin-2-one, hydrochloride)

Item no.

USP-1A02960

CAS Number

[1246638-08-3]

Unit

25 mg

Molecular formula

C26H34N2O5. HCl

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USP-1A02980

Dehydro Ivabradine ((S)-3-(3-(((3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)(methyl)amino)propyl)-7,8-dimethoxy-1,3-dihydro-2H-benzo[d]azepin-2-one)

Item no.

USP-1A02980

CAS Number

[1086026-31-4]

Unit

25 mg

Molecular formula

C27H34N2O5

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USP-1A03040

Desfluoro (3S,4R)-Paroxol (((3S,4R)-1-methyl-4-phenylpiperidin-3-yl)methanol)

Item no.

USP-1A03040

CAS Number

[176022-03-0]

Unit

25 mg

Molecular formula

C13H19NO

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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-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-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-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-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-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-1A05550

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

Item no.

USP-1A05550

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-1A05780

Atracurium Iodide Hexanediol Analog (2,2'-((hexane-1,6-diylbis(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-1A05780

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-1A06230

6-Oxo Docetaxel (COLD SHIPMENT REQUIRED)

Item no.

USP-1A06230

Unit

25 mg

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USP-1A07070

1,4-Bis(4-(benzothiophen-4-yl)piperazin-1-yl)butane (1,4-bis(4-(benzo[b]thiophen-4-yl)piperazin-1-yl)butane)

Item no.

USP-1A07070

Unit

25 mg

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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-1A07310

Epidaunorubicin ((8S,10S)-8-acetyl-10-(((2R,4S,5R,6S)-4-amino-5-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-6,8,11-trihydroxy-1-methoxy-7,8,9,10-tetrahydrotetracene-5,12-dione)

Item no.

USP-1A07310

CAS Number

[57918-24-8]

Unit

25 mg

Molecular formula

C27H29NO10

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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-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-1A07730

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

Item no.

USP-1A07730

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-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-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-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-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-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-1A08610

6Beta-Hydroxy Norethindrone Acetate ((6R,8R,9S,10R,13S,14S,17R)-17-ethynyl-6-hydroxy-13-methyl-3-oxo-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl acetate)

Item no.

USP-1A08610

Unit

25 mg

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