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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

976 products found

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USP-1A00060

Desmethoxy Omeprazole (2-(((3,5-dimethylpyridin-2-yl)methyl)sulfinyl)-5-methoxy-1H-benzo[d]imidazole)

Item no.

USP-1A00060

CAS Number

[110374-16-8]

Unit

25 mg

Molecular formula

C16H17N3O2S

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USP-1A02070

7-Dehydrocholesterol (COLD SHIPMENT REQUIRED) ((3S,9S,10R,13R,14R,17R)-10,13-dimethyl-17-((R)-6-methylheptan-2-yl)-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-ol)

Item no.

USP-1A02070

CAS Number

[434-16-2]

Unit

25 mg

Molecular formula

C27H44O

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USP-1A02100

Clopidogrel Acid N-Oxide (5-((S)-carboxy(2-chlorophenyl)methyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine 5-oxide)

Item no.

USP-1A02100

CAS Number

[1319197-73-3]

Unit

25 mg

Molecular formula

C15H14ClNO3S

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USP-1A02110

rac-Clopidogrel Acid N-Oxide (5-(carboxy(2-chlorophenyl)methyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine 5-oxide)

Item no.

USP-1A02110

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C15H14ClNO3S

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USP-1A02190

Duloxetine Phthalamide ((S)-2-(methyl(3-(naphthalen-1-yloxy)-3-(thiophen-2-yl)propyl)carbamoyl)benzoic acid)

Item no.

USP-1A02190

CAS Number

[199191-67-8]

Unit

25 mg

Molecular formula

C26H23NO4S

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USP-1A02200

Duloxetine Regioisomer (2-(2-(3-(methylamino)propyl)thiophen-3-yl)naphthalen-1-ol)

Item no.

USP-1A02200

CAS Number

[940291-11-2]

Unit

25 mg

Molecular formula

C18H19NOS

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USP-1A02210

N-Methyl Duloxetine 3-Isomer Oxalate ((R)-N,N-dimethyl-3-(naphthalen-1-yloxy)-3-(thiophen-3-yl)propan-1-amine, oxalate)

Item no.

USP-1A02210

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C19H21NOS. C2H2O4

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USP-1A02230

Pemetrexed Tromethamide (N2-(4-(2-(2-amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl)benzoyl)-N5-(1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl)-L-glutamine)

Item no.

USP-1A02230

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C24H30N6O

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USP-1A02350

rac-5,6-Dehydropregabalin (3-(aminomethyl)-5-methylhex-5-enoic acid)

Item no.

USP-1A02350

CAS Number

[1136478-30-2]

Unit

25 mg

Molecular formula

C8H15NO2

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USP-1A02360

Pemetrexed Sodium 1-Methyl Ester ((S)-4-(4-(2-(2-amino-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl)benzamido)-5-methoxy-5-oxopentanoic acid, sodium salt)

Item no.

USP-1A02360

CAS Number

[1265908-61-9]

Unit

25 mg

Molecular formula

C21H22N5O6. Na

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USP-1A02420

Aripiprazole Diquinolinone Butanediol (7,7'-(butane-1,4-diylbis(oxy))bis(3,4-dihydroquinolin-2(1H)-one))

Item no.

USP-1A02420

CAS Number

[882880-12-8]

Unit

25 mg

Molecular formula

C22H24N2O4

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USP-1A02440

2-Monobromo Aripiprazole Hydrochloride (7-(4-(4-(2-bromophenyl)piperazin-1-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one, hydrochloride)

Item no.

USP-1A02440

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C23H28BrN3O2. HCl

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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-1A02480

Aripiprazole Bromobutoxyquinolinone Analog (7-(4-bromobutoxy)quinolin-2(1H)-one)

Item no.

USP-1A02480

CAS Number

[203395-59-9]

Unit

25 mg

Molecular formula

C13H14BrNO2

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USP-1A02500

N-Alkyl Aripiprazole (7-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)butoxy)-1-(4-((2-oxo-1,2,3,4-tetrahydroquinolin-7-yl)oxy)butyl)-3,4-dihydroquinolin-2(1H)-one)

Item no.

USP-1A02500

CAS Number

[1424857-63-5]

Unit

25 mg

Molecular formula

C36H42Cl2N4O4

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USP-1A02530

Aripiprazole Isomer (5-(4-(4-(2,3-dichlorophenyl)piperazin-1-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one)

Item no.

USP-1A02530

CAS Number

[203395-78-2]

Unit

25 mg

Molecular formula

C23H27Cl2N3O2

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USP-1A02560

Aripiprazole Hydroxyquinolinone Analog (7-hydroxyquinolin-2(1H)-one)

Item no.

USP-1A02560

CAS Number

[70500-72-0]

Unit

25 mg

Molecular formula

C9H7NO2

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USP-1A02570

3-Dechloro Aripiprazole (7-(4-(4-(2-chlorophenyl)piperazin-1-yl)butoxy)-3,4-dihydroquinolin-2(1H)-one)

Item no.

USP-1A02570

CAS Number

[203395-81-7]

Unit

25 mg

Molecular formula

C23H28ClN3O2

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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-1A02590

1,4-Bis(4-(2,3-dichlorophenyl)piperazin-1-yl)butane dihydrochloride (1,4-bis(4-(2,3-dichlorophenyl)piperazin-1-yl)butane, hydrochloride)

Item no.

USP-1A02590

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C24H30Cl4N4. 2 HCl

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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-1A02630

(S)-Sitagliptin Phosphate ((S)-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 phosphate)

Item no.

USP-1A02630

CAS Number

[823817-58-9]

Unit

25 mg

Molecular formula

C16H18F6N5O5P

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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-1A02740

Epinephrine Hydrochloride Methoxy Analog (4-(1-methoxy-2-(methylamino)ethyl)benzene-1,2-diol, hydrochloride)

Item no.

USP-1A02740

CAS Number

[74571-90-7]

Unit

25 mg

Molecular formula

C10H15NO3. HCl

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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-1A06850

Z-Mycophenolate Mofetil (2-Morpholinoethyl (Z)-6-(4-hydroxy-6-methoxy-7-methyl-3-oxo-1,3-dihydroisobenzofuran-5-yl)-4-methylhex-4-enoate)

Item no.

USP-1A06850

Unit

10 mg

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USP-1A08820

N-Nitroso-(E)-N,6,6-trimethylhept-2-en-4-yn-1-amine Solution (1 mg/mL in Methanol) ((E)-N-(6,6-dimethylhept-2-en-4-yn-1-yl)-N-methylnitrous amide)

Item no.

USP-1A08820

Unit

1 mL

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USP-1A08890

N-Nitroso Cinacalcet Solution (1 mg/mL in Methanol) ((R)-N-(1-(naphthalen-1-yl)ethyl)-N-(3-(3-(trifluoromethyl)phenyl)propyl)nitrous amide)

Item no.

USP-1A08890

Unit

1 mL

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USP-1A09150

N-Nitroso Sertraline Solution (1 mg/mL in Methanol) (N-((1S,4S)-4-(3,4-dichlorophenyl)-1,2,3,4-tetrahydronaphthalen-1-yl)-N-methylnitrous amide)

Item no.

USP-1A09150

Unit

1 mL

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USP-1A09510

N-(4-Chlorobenzyl)-N-(pyridin-2-yl)nitrosoamine Solution (1 mg/mL in Methanol) (N-(4-Chlorobenzyl)-N-(pyridin-2-yl)nitrosoamine)

Item no.

USP-1A09510

Unit

1 mL

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USP-1A10060

17-Acetyl Norethindrone Acetate (3,20-Dioxo-19-nor-17alpha-pregn-4-en-17-yl acetate)

Item no.

USP-1A10060

Unit

25 mg

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USP-1A10080

Aminofluconazole Quaternary Mesylate (4-Amino-1-(2-(2,4-difluorophenyl)-2-hydroxy-3-(1H-1,2,4-triazol-1-yl)propyl)-4H-1,2,4-triazolium methanesulfonate)

Item no.

USP-1A10080

Unit

25 mg

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USP-1A10100

Guanosine (2-Amino-9-Beta-D-ribofuranosylpurine-6(1H)-one)

Item no.

USP-1A10100

Unit

25 mg

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USP-1A10120

6-Chloro Famciclovir (2-[2-(2-Amino-6-chloro-9H-purin-9-yl)ethyl]propane-1,3-diyl diacetate)

Item no.

USP-1A10120

Unit

25 mg

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USP-1A10250

Desethylene Quingestanol Acetate (3-Isopropoxy-19-nor-(17alpha)-pregn-3,5-dien-20-yn-17-yl acetate)

Item no.

USP-1A10250

Unit

25 mg

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USP-1A10290

Anhydroerythromycin A

Item no.

USP-1A10290

Unit

25 mg

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USP-1A10340

(2R)-Vildagliptin ((R)-1-[N-(3-Hydroxyadamantan-1-yl)glycyl]-2-pyrrolidinecarbonitrile)

Item no.

USP-1A10340

Unit

25 mg

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USP-1A10350

Beclomethasone (9-Chloro-11beta,17,21-trihydroxy-16beta-methylpregna-1,4-diene-3,20-dione)

Item no.

USP-1A10350

Unit

25 mg

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USP-1A10360

Diclofenac Acetamide (N-(4-Chlorophenyl)-2-(2,6-dichlorophenyl)acetamide)

Item no.

USP-1A10360

Unit

25 mg

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USP-1A10370

Diclofenac Methyl Ester (Methyl 2-{2-[(2,6-dichlorophenyl)amino]phenyl}acetate)

Item no.

USP-1A10370

Unit

25 mg

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USP-1A10380

Edaravone Dimer (5,5'-Dimethyl-2,2'-diphenyl-2,2',4,4'-tetrahydro-3H,3'H-[4,4'-bipyrazole]-3,3'-dione)

Item no.

USP-1A10380

Unit

25 mg

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USP-1A10390

11beta-Hydroxy Androstenedione (11beta-Hydroxyandrost-4-ene-3,17-dione)

Item no.

USP-1A10390

Unit

25 mg

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USP-1A10400

Metronidazole Acid (2-(2-Methyl-5-nitroimidazol-1-yl)acetic acid)

Item no.

USP-1A10400

Unit

25 mg

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USP-1A10410

Chloro Naproxen ((S)-2-(5-Chloro-6-methoxynaphthalen-2-yl)propanoic acid)

Item no.

USP-1A10410

Unit

25 mg

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USP-1A10420

Bromo Naproxen ((2S)-2-(5-Bromo-6-methoxynaphthalen-2-yl)propanoic acid)

Item no.

USP-1A10420

Unit

25 mg

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USP-1A10430

Iodo Naproxen ((S)-2-(5-Iodo-6-methoxynaphthalen-2-yl)propanoic acid)

Item no.

USP-1A10430

Unit

25 mg

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USP-1A11970

Sitagliptin Pyrazinone (3-(trifluoromethyl)-6,7-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-8(5H)-one)

Item no.

USP-1A11970

Unit

25 mg

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USP-1A12310

Despiperazinyl Olaparib (2-fluoro-N,N-dimethyl-5-((4-oxo-3,4-dihydrophthalazin-1-yl)methyl)benzamide)

Item no.

USP-1A12310

Unit

25 mg

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