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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

791 products found

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USP-1A05960

Nafcillin Penilloic Acid (2-[(2-Ethoxy-1-naphthamido)methyl]-5,5-dimethylthiazolidine-4-carboxylic acid)

Item no.

USP-1A05960

Unit

10 mg

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USP-1A06190

Atazanavir Ethyl Analog (methyl ((6S,11S,12S,15S)-12-benzyl-6-(tert-butyl)-11-hydroxy-16,16-dimethyl-4,7,14-trioxo-9-(4-(pyridin-2-yl)benzyl)-3-oxa-5,8,9,13-tetraazaheptadecan-15-yl)carbamate)

Item no.

USP-1A06190

Unit

25 mg

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USP-1A06200

Didesmethyl Desvenlafaxine (4-(2-amino-1-(1-hydroxycyclohexyl)ethyl)phenol)

Item no.

USP-1A06200

Unit

25 mg

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USP-1A06220

N-Formyl Docetaxel

Item no.

USP-1A06220

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-1A06250

4-Epi-6-oxo Docetaxel (5beta,20-epoxy-1,7alpha-dihydroxy-9,10-dioxotax-11-ene-2alpha,4,13alpha-triyl 4-acetate 2-benzoate 13-[(2R,3S)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-2-hydroxy-3-phenylpropanoate])

Item no.

USP-1A06250

Unit

25 mg

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USP-1A06260

6-Dichloroethoxycarbonyl Docetaxel

Item no.

USP-1A06260

Unit

25 mg

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USP-1A06280

Piperazinedionecarbonyl D-phenylglycine ((R)-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)phenylacetic acid)

Item no.

USP-1A06280

Unit

25 mg

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USP-1A06290

Piperacillin Sulfoxide ((2S,5R,6R)-6-((R)-2-(4-ethyl-2,3-dioxopiperazine-1-carboxamido)-2-phenylacetamido)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid 4-oxide)

Item no.

USP-1A06290

Unit

25 mg

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USP-1A06300

Bis-Acyclovir (Bis({9-[(2-hydroxyethoxy)methyl]guanine}-N2-yl)methane)

Item no.

USP-1A06300

Unit

25 mg

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USP-1A06310

Desvenlafaxine Benzyl Ether (1-(1-(4-(benzyloxy)phenyl)-2-(dimethylamino)ethyl)cyclohexan-1-ol)

Item no.

USP-1A06310

Unit

25 mg

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USP-1A06320

Butrol Sodium (rel-10-[(1R,2S)-2,3-dihydroxy-1-(hydroxymethyl)propyl]-1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid, sodium salt)

Item no.

USP-1A06320

Unit

10 mg

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USP-1A06340

4-Arylurea Regorafenib Analog (4-(4-{3-[4-Chloro-3-(trifluoromethyl)phenyl]ureido}-3-(4-{3-[4-chloro-3-(trifluoromethyl)phenyl]ureido}-3-fluorophenoxy)phenoxy)-N-methylpicolinamide)

Item no.

USP-1A06340

Unit

25 mg

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USP-1A06350

Rotigotine O-Tosylate Hydrochloride ((S)-6-(propyl(2-(thiophen-2-yl)ethyl)amino)-5,6,7,8-tetrahydronaphthalen-1-yl 4-methylbenzenesulfonate hydrochloride)

Item no.

USP-1A06350

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C26H31NO3S2 · HCl

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USP-1A06360

Sorafenib Isopropyl Carbamate (Isopropyl {4-[2-(methylcarbamoyl)pyridin-4-yl]oxyphenyl}carbamate)

Item no.

USP-1A06360

Unit

25 mg

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USP-1A06370

Isopropyl Diphenylphosphorylpentanoate (Isopropyl 5-(Diphenylphosphinyl)pentanoic acid)

Item no.

USP-1A06370

CAS Number

[2088449-88-9]

Unit

25 mg

Molecular formula

C20H25O3P

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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-1A06390

Atazanavir Ditertbutyl Analog (tert-butyl 2-((2S,3S)-3-((tert-butoxycarbonyl)amino)-2-hydroxy-4-phenylbutyl)-2-(4-(pyridin-2-yl)benzyl)hydrazine-1-carboxylate)

Item no.

USP-1A06390

Unit

25 mg

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USP-1A06400

Rotigotine Hydrochloride Ethyl Analog ((S)-6-(ethyl(2-(thiophen-2-yl)ethyl)amino)-5,6,7,8-tetrahydronaphthalen-1-ol hydrochloride)

Item no.

USP-1A06400

CAS Number

[1369532-05-7]

Unit

25 mg

Molecular formula

C18H23NOS · HCl

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USP-1A06410

O-Thienylethyl Rotigotine Hydrochloride ((S)-N-propyl-5-(2-(thiophen-2-yl)ethoxy)-N-(2-(thiophen-2-yl)ethyl)-1,2,3,4-tetrahydronaphthalen-2-amine hydrochloride)

Item no.

USP-1A06410

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C25H31NOS2 · HCl

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USP-1A06420

11Beta-Epoxydexamethasone (9,11Beta-Epoxy-17,21-dihydroxy-16alpha-methylpregna-1,4-diene-3,20-dione)

Item no.

USP-1A06420

Unit

25 mg

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USP-1A06440

Exemestane 6alpha-epoxide ((6S,8R,9S,10R,13S,14S)-10,13-dimethyl-7,8,9,10,11,12,13,14,15,16-decahydrospiro [cyclopenta[a]phenanthrene-6,2'-oxirane]-3,17-dione)

Item no.

USP-1A06440

Unit

25 mg

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USP-1A06450

Exemestane 6beta-epoxide ((6R,8R,9S,10R,13S,14S)-10,13-dimethyl-7,8,9,10,11,12,13,14,15,16-decahydrospiro [cyclopenta[a]phenanthrene-6,2'-oxirane]-3,17-dione)

Item no.

USP-1A06450

Unit

25 mg

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USP-1A06460

Acetyl Rotigotine Hydrochloride ((S)-6-(propyl(2-(thiophen-2-yl)ethyl)amino)-5,6,7,8-tetrahydronaphthalen-1-yl acetate hydrochloride)

Item no.

USP-1A06460

CAS Number

[1229620-82-9]

Unit

25 mg

Molecular formula

C21H27NO2S · HCl

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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-1A06480

Atazanavir Dipeptide Analog (methyl ((5S,8S,13S,14S,17S)-14-benzyl-5,8-di-tert-butyl-13-hydroxy-18,18-dimethyl-3,6,9,16-tetraoxo-11-(4-(pyridin-2-yl)benzyl)-2-oxa-4,7,10,11,15-pentaazanonadecan-17-yl)carbamate)

Item no.

USP-1A06480

Unit

25 mg

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USP-1A06490

Atazanavir R,S,S,S-diastereomer (methyl [(5R,10S,11S,14S)-11-benzyl-5-tert-butyl-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-[[4-(pyridin-2-yl)phenyl]methyl]-2-oxa-4,7,8,12-tetraazahexadecan-14-yl]carbamate)

Item no.

USP-1A06490

Unit

25 mg

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USP-1A06500

Atazanavir S,S,S,R-diastereomer (methyl [(5S,10S,11S,14R)-11-benzyl-5-tert-butyl-10-hydroxy-15,15-dimethyl-3,6,13-trioxo-8-[[4-(pyridin-2-yl)phenyl]methyl]-2-oxa-4,7,8,12-tetraazahexadecan-14-yl]carbamate)

Item no.

USP-1A06500

Unit

25 mg

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USP-1A06510

Atazanavir amine analog methyl ((S)-1-(((2S,3S)-4-(2-((S)-2-amino-3,3-dimethylbutanoyl)-1-(4-(pyridin-2-yl)benzyl)hydrazinyl)-3-hydroxy-1-phenylbutan-2-yl)amino)-3,3-dimethyl-1-oxobutan-2-yl)carbamate)

Item no.

USP-1A06510

Unit

25 mg

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USP-1A06520

5-Formyl-5,6,7,8-tetrahydropteroic acid (4-(((2-amino-5-formyl-4-oxo-1,4,5,6,7,8-hexahydropteridin-6-yl)methyl)amino)benzoic acid)

Item no.

USP-1A06520

Unit

10 mg

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USP-1A06540

Memantine lactose adduct ((2S,3R,4S,5R,6R)-2-(((2R,3S,4R,5R,6R)-6-(((1r,3R,5S,7r)-3,5-dimethyladamantan-1-yl)amino)-4,5-dihydroxy-2-(hydroxymethyl)tetrahydro-2H-pyran-3-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol)

Item no.

USP-1A06540

Unit

25 mg

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USP-1A06550

6-Ketofluticasone propionate

Item no.

USP-1A06550

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

Unit

10 mg

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USP-1A06580

Ampicillin Hydantoin Analog ((2S,5R,6R)-6-(2,5-dioxo-4-phenylimidazolidin-1-yl)-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylic acid)

Item no.

USP-1A06580

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-1A06600

Methylphenothiazine Sulfoxide (10-Methyl-10H-phenothiazine Sulfoxide)

Item no.

USP-1A06600

Unit

25 mg

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USP-1A06630

Dehydroargatroban Trifluoroacetate ((2R,4R)-4-Methyl-1-{[(3-methylquinolin-8-yl)sulfonyl]-L-arginyl}piperidine-2-carboxylic acid Trifluoroacetate)

Item no.

USP-1A06630

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-1A06650

2',3'-Di-O-Acetyl-5'-Deoxy-5-Fluorocytidine (5'-Deoxy-2',3'-di-O-acetyl-5-fluorocytidine)

Item no.

USP-1A06650

Unit

25 mg

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USP-1A06660

3'-O-(5-deoxy-Beta-D-ribofuranosyl) Capecitabine ([1-[5-Deoxy-3-O-(5-deoxy-beta-d-ribofuranosyl)-beta-d-ribofuranosyl]-5-fluoro-2-oxo-1,2-dihydropyrimidin-4-yl]-carbamic acid pentyl ester)

Item no.

USP-1A06660

Unit

25 mg

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USP-1A06690

2',3'-Di-O-Acetyl-5'-Deoxy-5-Fluoro-N4-(Pentyloxycarbonyl)Cytidine (2',3'-Di-O-Acetyl-5'-Deoxy-5-fluoro-N4-(pentyloxycarbonyl)cytidine)

Item no.

USP-1A06690

Unit

25 mg

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USP-1A06940

Tamsulosin Amine ((R)-5-(2-Aminopropyl)-2-methoxybenzenesulfonamide)

Item no.

USP-1A06940

CAS Number

[112101-81-2]

Unit

25 mg

Molecular formula

C10H16N2O3S

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USP-1A06950

Efavirenz Amino Alcohol Methyl Carbamate (methyl (S)-(4-chloro-2-(4-cyclopropyl-1,1,1-trifluoro-2-hydroxybut-3-yn-2-yl)phenyl)carbamate)

Item no.

USP-1A06950

Unit

25 mg

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USP-1A07000

11-Keto Tiamulin Hydrochloride ((3aS,4R,6S,8R,9R,9aR,10R)-6-Ethenyl-4,6,9,10-tetramethyl-1,5-dioxodecahydro-3a,9-propano-3aH-cyclopentacycloocten-8-yl[[2-(diethylamino)ethyl]sulfanyl]-acetate Hydrochloride Salt)

Item no.

USP-1A07000

Unit

25 mg

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USP-1A07100

Montelukast Ketone (1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]-1-propanone,(E)-1-{3-[2-(7-Chloroquinolin-2-yl)vinyl]phenyl}-3-[2-(2-hydroxypropan-2-yl)phenyl]propan-1-one)

Item no.

USP-1A07100

Unit

25 mg

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USP-1A07110

Anastrozole Diacid (2,2'-(5-((1H-1,2,4-triazol-1-yl)methyl)-1,3-phenylene)bis(2-methylpropanoic acid))

Item no.

USP-1A07110

Unit

25 mg

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USP-1A07120

Apixaban Open Ring Amide (6-(4-((5-amino-5-oxopentyl)amino)phenyl)-1-(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridine-3-carboxamide)

Item no.

USP-1A07120

Unit

25 mg

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USP-1A07170

Z-Montelukast ([1-[[[(1R)-1-[3-[(Z)-2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid)

Item no.

USP-1A07170

Unit

25 mg

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USP-1A07200

Fenofibrate Ether ((4-Chlorophenyl)[4-(1-methylethoxy)phenyl]methanone)

Item no.

USP-1A07200

Unit

25 mg

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USP-1A07210

N-Benzyl Formoterol (N-(5-((RS)-2-(benzyl((RS)-1-(4-methoxyphenyl)propan-2-yl)amino)-1-hydroxyethyl)-2-hydroxyphenyl)formamide)

Item no.

USP-1A07210

Unit

25 mg

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