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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

791 products found

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USP-1A02540

Aripiprazole Spiro Analog (8-(2,3-dichlorophenyl)-5,8-diazaspiro[4.5]decan-5-ium, bromide)

Item no.

USP-1A02540

CAS Number

[795313-24-5]

Unit

25 mg

Molecular formula

C14H19Cl2N2. Br

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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-1A02600

Sitagliptin Phenylcrotonyl Analog ((E)-1-{3-(Trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl}-4-(2,4,5-trifluorophenyl)but-2-en-1-one)

Item no.

USP-1A02600

CAS Number

[1253056-18-6]

Unit

25 mg

Molecular formula

C16H12F6N4O

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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-1A02640

rac-Sitagliptin Hydrochloride (3-amino-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 hydrochloride)

Item no.

USP-1A02640

CAS Number

[2309520-11-2]

Unit

25 mg

Molecular formula

C16H15F6N5O · HCl

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USP-1A02650

Sitagliptin Enamine ((Z)-3-amino-1-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-4-(2,4,5-trifluorophenyl)but-2-en-1-one)

Item no.

USP-1A02650

CAS Number

[767340-03-4]

Unit

25 mg

Molecular formula

C16H13F6N5O

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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-1A02680

Thiazolylacetyl Glycine Oxime Acetal ((Z)-2-(2-Aminothiazol-4-yl)-N-(2,2-dihydroxyethyl)-2-(hydroxyimino)acetamide)

Item no.

USP-1A02680

Unit

25 mg

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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-1A02700

(R)-Laudanosine ((R)-1-(3,4-Dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinoline)

Item no.

USP-1A02700

CAS Number

[85-63-2]

Unit

25 mg

Molecular formula

C21H27NO4

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USP-1A02710

Cisatracurium Besylate cis-Quaternary Acid (COLD SHIPMENT REQUIRED) ((1R,2R)-2-(2-carboxyethyl)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-iumbenzenesulfonate)

Item no.

USP-1A02710

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-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-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-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-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-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-1A02840

Sitagliptin Acid ((R)-3-Amino-4-(2,4,5-trifluorophenyl)butanoic acid)

Item no.

USP-1A02840

CAS Number

[936630-57-8]

Unit

25 mg

Molecular formula

C10H10F3NO2

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USP-1A02860

(R)-N-Methyllaudanosine Iodide ((R)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2,2-dimethyl-1,2,3,4-tetrahydroisoquinolin-2-ium, iodide)

Item no.

USP-1A02860

CAS Number

[41431-32-7]

Unit

25 mg

Molecular formula

C22H30INO4

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USP-1A02880

Atracurium Iodide Quaternary Alcohol Acetate ((1R)-2-(3-((5-acetoxypentyl)oxy)-3-oxopropyl)-1-(3,4-dimethoxybenzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium, iodide)

Item no.

USP-1A02880

Unit

25 mg

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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-1A02910

Benzoylphenylacetonitrile (3-Benzoylbenzeneacetonitrile)

Item no.

USP-1A02910

CAS Number

[21288-34-6]

Unit

25 mg

Molecular formula

C15H11NO

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USP-1A02920

1-Oxo Ivabradine Hydrochloride ((S)-3-(3-(((3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)(methyl)amino)propyl)-7,8-dimethoxy-4,5-dihydro-1H-benzo[d]azepine-1,2(3H)-dione, hydrochloride)

Item no.

USP-1A02920

CAS Number

[1616710-50-9]

Unit

25 mg

Molecular formula

C27H34N2O6. HCl

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USP-1A02930

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

Item no.

USP-1A02930

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C26H34N2O5. HCl

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USP-1A02940

Ivabradine Amine Hydrochloride ((S)-1-(3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)-N-methylmethanamine, hydrochloride)

Item no.

USP-1A02940

CAS Number

[866783-13-3]

Unit

25 mg

Molecular formula

C12H17NO2. HCl

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USP-1A02950

4-Desmethyl Ivabradine Hydrochloride ((S)-3-(3-(((4-hydroxy-3-methoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)(methyl)amino)propyl)-7,8-dimethoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one, hydrochloride)

Item no.

USP-1A02950

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C26H34N2O5. HCl

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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-1A02970

7-Desmethyl Ivabradine ((S)-3-(3-(((3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)(methyl)amino)propyl)-7-hydroxy-8-methoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one)

Item no.

USP-1A02970

CAS Number

[304462-60-0]

Unit

25 mg

Molecular formula

C26H34N2O5

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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-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-1A03010

N-Phenoxycarbonyl Paroxetine (phenyl (3S,4R)-3-((benzo[d][1,3]dioxol-5-yloxy)methyl)-4-(4-fluorophenyl)piperidine-1-carboxylate)

Item no.

USP-1A03010

CAS Number

[253768-88-6]

Unit

25 mg

Molecular formula

C26H24FNO5

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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-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-1A03060

Paroxol ((4R,3S)-4-(4-Fluorophenyl)-1-methyl-3-piperidinemethanol)

Item no.

USP-1A03060

CAS Number

[105812-81-5]

Unit

25 mg

Molecular formula

C13H18FNO

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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-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-1A03120

Ivabradine R-Enantiomer Hydrochloride ((R)-3-(3-(((3,4-dimethoxybicyclo[4.2.0]octa-1(6),2,4-trien-7-yl)methyl)(methyl)amino)propyl)-7,8-dimethoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one, hydrochloride)

Item no.

USP-1A03120

CAS Number

[148849-68-7]

Unit

25 mg

Molecular formula

C27H36N2O5. HCl

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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-1A03140

Ivabradine Veratryl Analog Hydrochloride (3-(3-((2-(3,4-dimethoxyphenyl)propyl)(methyl)amino)propyl)-7,8-dimethoxy-1,3,4,5-tetrahydro-2H-benzo[d]azepin-2-one, hydrochloride)

Item no.

USP-1A03140

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C27H38N2O5. HCl

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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-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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