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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

1507 products found

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USP-1A00860

Azithromycin C (3''-O-demethylazithromycin)

Item no.

USP-1A00860

CAS Number

[620169-47-3]

Unit

25 mg

Molecular formula

C37H70N2O12

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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-1A02120

Clopidogrel Diester Enantiomer Sulfate ((S)-1-(2-chlorophenyl)-2-methoxy-2-oxoethyl (R)-2-(2-chlorophenyl)-2-(6,7-dihydrothieno[3,2-c]pyridin-5(4H)-yl)acetate, sulfate)

Item no.

USP-1A02120

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C24H21Cl2NO4S. H2SO4

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USP-1A02130

Desloratadine N-oxide (8-Chloro-6,11-dihydro-11-(4-piperidinylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine 1-Oxide)

Item no.

USP-1A02130

CAS Number

[169253-26-3]

Unit

25 mg

Molecular formula

C19H19ClN2O

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USP-1A02240

Rivaroxaban Open Oxomorpholine Ring ((S)-5-chloro-N-((3-(4-(2-hydroxy-N-(2-hydroxyethyl)acetamido) phenyl)-2-oxooxazolidin-5-yl)methyl)thiophene-2-carboxamide)

Item no.

USP-1A02240

CAS Number

[1160170-00-2]

Unit

10 mg

Molecular formula

C19H20ClN3O6S

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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-1A02470

Aripiprazole Acid Analog (4-((2-oxo-1,2,3,4-tetrahydroquinolin-7-yl)oxy)butanoic acid)

Item no.

USP-1A02470

CAS Number

[58899-27-7]

Unit

25 mg

Molecular formula

C13H15NO4

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USP-1A02520

Aripiprazole N-oxide Isomer (4-(2,3-dichlorophenyl)-1-(4-((2-oxo-1,2,3,4-tetrahydroquinolin-7-yl)oxy)butyl)piperazine 4-oxide)

Item no.

USP-1A02520

CAS Number

[573691-11-9]

Unit

25 mg

Molecular formula

C23H27Cl2N3O3

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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-1A02660

Sitagliptin Alcohol (3-hydroxy-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)butan-1-one)

Item no.

USP-1A02660

CAS Number

[1253056-01-7]

Unit

25 mg

Molecular formula

C16H14F6N4O2

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USP-1A02670

Sitagliptin Ketone (1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)butane-1,3-dione)

Item no.

USP-1A02670

CAS Number

[764667-65-4]

Unit

25 mg

Molecular formula

C16H12F6N4O2

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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-1A02730

21-Desacetyl Deflazacort (11Beta,16Beta)-11,21-Dihydroxy-2'-methyl-5'H-pregna-1,4-dieno[17,16-d]oxazole-3,20-dione)

Item no.

USP-1A02730

CAS Number

[13649-57-5]

Unit

25 mg

Molecular formula

C23H29NO5

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USP-1A02770

Dimethylketoprofen (COLD SHIPMENT REQUIRED) ((2RS)-2-[3-(2,4-Dimethylbenzoyl)phenyl]propanoic Acid)

Item no.

USP-1A02770

Unit

25 mg

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USP-1A02820

2,5-Difluoro Sitagliptin ((3R)-3-Amino-4-(2,5-difluorophenyl)-1-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]butan-1-one)

Item no.

USP-1A02820

CAS Number

[486460-31-5]

Unit

25 mg

Molecular formula

C16H16F5N5O

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USP-1A02830

2,4-Difluoro Sitagliptin ((3R)-3-Amino-4-(2,4-difluorophenyl)-1-[3-(trifluoromethyl)-5,6-dihydro[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl]butan-1-one)

Item no.

USP-1A02830

CAS Number

[945261-48-3]

Unit

25 mg

Molecular formula

C16H16F5N5O

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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-1A02990

Paroxetine Hydrochloride Piperidinemethanol Analog (((3S,4R)-4-(4-fluorophenyl)piperidin-3-yl)methanol, hydrochloride)

Item no.

USP-1A02990

CAS Number

[220548-73-2]

Unit

25 mg

Molecular formula

C12H16FNO. HCl

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USP-1A03000

Paroxetine Hydrochloride Catechol Analog (4-(((3S,4R)-4-(4-fluorophenyl)piperidin-3-yl)methoxy)benzene-1,2-diol, hydrochloride)

Item no.

USP-1A03000

CAS Number

[1394861-12-1]

Unit

25 mg

Molecular formula

C18H20FNO3. HCl

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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-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-1A03090

Ivabradine N-Oxide (3-(7,8-dimethoxy-2-oxo-1,2,4,5-tetrahydro-3H-benzo[d]azepin-3-yl)-N-(((S)-3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)-N-methylpropan-1-amine oxide)

Item no.

USP-1A03090

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C27H36N2O6

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USP-1A03110

Hydroxy Ivabradine (3-(3-hydroxypropyl)-7,8-dimethoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one)

Item no.

USP-1A03110

CAS Number

[1235547-07-5]

Unit

25 mg

Molecular formula

C15H21NO4

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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-1A03160

Ivabradine Bisbenzazepine Analog (3,3'-(propane-1,3-diyl)bis(7,8-dimethoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one))

Item no.

USP-1A03160

CAS Number

[2731089-65-7]

Unit

25 mg

Molecular formula

C27H34N2O6

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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-1A03330

Orlistat Open Ring Amide (N-Formyl-L-leucine(S)-1-[(2S,3S)-2-hydroxy-3-[1-phenyl-R-ethyl-carbomoyl]nonyl]-dodecyl ester)

Item no.

USP-1A03330

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C37H64N2O5

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USP-1A03450

Abiraterone Isopropyl Ether (3-((3S,8R,9S,10R,13S,14S)-3-isopropoxy-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)pyridine, 3beta-Isopropoxy-17-(pyridin-3-yl)androsta-5,16-diene)

Item no.

USP-1A03450

Unit

25 mg

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USP-1A03460

Desmethyl Bosentan (4-(tert-butyl)-N-(6-(2-hydroxyethoxy)-5-(2-hydroxyphenoxy)-[2,2'-bipyrimidin]-4-yl)benzenesulfonamide)

Item no.

USP-1A03460

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-1A03570

Fingolimod decyl homolog (2-amino-2-(4-decylphenethyl)propane-1,3-diol)

Item no.

USP-1A03570

CAS Number

[780729-32-0]

Unit

25 mg

Molecular formula

C21H37NO2

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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

CAS Number

[5233-42-1]

Unit

25 mg

Molecular formula

C7H7Cl2N3O4S2

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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-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-1A03640

Decladinosyl Clarithromycin (3-O-De(2,6-dideoxy-3-C-methyl-3-O-methyl-alpha-L-ribo-hexopyranosyl)-6-O-methylerythromycin, 3-O-Decladinosyl-6-O-methylerythromycin A)

Item no.

USP-1A03640

Unit

25 mg

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USP-1A03810

Rifamycin O (4-O-(Carboxymethyl)-1-deoxy-1,4-dihydro-4-hydroxy-1-oxo-rifamycin gamma-Lactone)

Item no.

USP-1A03810

Unit

25 mg

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USP-1A03840

2,5-Dichloro Vilanterol Trifenatate Isomer ((R)-4-(2-((6-(2-((2,5-dichlorobenzyl)oxy)ethoxy)hexyl)amino)-1-hydroxyethyl)-2-(hydroxymethyl)phenol, 2,2,2-triphenylacetate)

Item no.

USP-1A03840

Unit

25 mg

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USP-1A03930

N-Nitrosodipropylamine (NDPA) Solution (1 mg/mL in Methanol) (N,N-dipropylnitrous amide)

Item no.

USP-1A03930

Unit

1 mL

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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-1A04100

4-Nitrosopiperazine-1-ethanol Solution (1 mg/mL in Methanol) (2-(4-Nitrosopiperazin-1-yl)ethan-1-ol)

Item no.

USP-1A04100

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-1A04320

Tenofovir Soproxil (((((((R)-1-(6-amino-9H-purin-9-yl)propan-2-yl)oxy)methyl)(hydroxy)phosphoryl)oxy)methyl isopropyl carbonate)

Item no.

USP-1A04320

Unit

25 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-1A04410

4-Nitrosopiperazine-1-ethanol (2-(4-Nitrosopiperazin-1-yl)ethan-1-ol)

Item no.

USP-1A04410

Unit

10 mg

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USP-1A04420

1-Benzhydryl-4-nitrosopiperazine (1-Benzhydryl-4-nitrosopiperazine)

Item no.

USP-1A04420

Unit

10 mg

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USP-1A04440

2-(4-Nitrosopiperazin-1-yl)pyrimidine (2-(4-nitrosopiperazin-1-yl)pyrimidine)

Item no.

USP-1A04440

Unit

10 mg

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