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Pharmaceutical Reference Standards

USP - United States Pharmacopeia Pharmaceutical Analytical Impurities

976 products found

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USP-1A00040

Hydroxythiadiazol Sulfoxide Derivative (4-morpholino-1,2,5-thiadiazol-3(2H)-one 1-oxide)

Item no.

USP-1A00040

CAS Number

[75202-36-7]

Unit

25 mg

Molecular formula

C6H9N3O3S

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USP-1A00050

Rosuvastatin Ketone ((R,E)-7-(4-(4-fluorophenyl)-6-isopropyl-2-(N-methylmethylsulfonamido)pyrimidin-5-yl)-3-hydroxy-5-oxohept-6-enoic acid)

Item no.

USP-1A00050

CAS Number

[1422619-13-3]

Unit

25 mg

Molecular formula

C22H26FN3O6S

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USP-1A00100

6alpha-Hydroxy ethinyl estradiol (COLD SHIPMENT REQUIRED) (19-Nor-17alpha-pregna-1,3,5(10)-trien-20-yne-3,6alpha,17-triol)

Item no.

USP-1A00100

CAS Number

[27521-34-2]

Unit

25 mg

Molecular formula

C20H24O3

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USP-1A00170

Rosuvastatin Isoamyl Ester ((3S,5R,6E)-7-[4-(4-flurophenyl)-6-(1-methylethyl)-2-[N-methyl(methylsulphonyl)amino]-5-pyrimidinyI]-3,5-dihydroxy-6-heptanoic acid, methyl butyl ester)

Item no.

USP-1A00170

CAS Number

[1197348-98-3]

Unit

25 mg

Molecular formula

C27H38FN3O6S

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USP-1A00180

N-Ethyl Quetiapine (11-(4-Ethylpiperazin-1-yl)dibenzo[b,f][1,4]thiazepine hydrochloride)

Item no.

USP-1A00180

CAS Number

[1011758-03-4] (free base)

Unit

25 mg

Molecular formula

C19H21N3S. C4H4O4

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USP-1A00190

Quetiapine Desethoxy (COLD SHIPMENT REQUIRED) (2-[4-(dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl]ethanol)

Item no.

USP-1A00190

CAS Number

[329216-67-3]

Unit

25 mg

Molecular formula

C19H21N3OS

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USP-1A00230

N-Isopropyl Carvedilol (1-(9H-Carbazol-4-yloxy)-3-[[2-(2-methoxyphenoxy)ethyl](1-methylethyl)amino]-2-propanol)

Item no.

USP-1A00230

CAS Number

[1246819-01-1]

Unit

25 mg

Molecular formula

C27H32N2O4

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USP-1A00270

Azacitidine Isomer -3 (1-Beta-D-Ribofuranosyl-3-aminocarbonyl guanidine acetate)

Item no.

USP-1A00270

CAS Number

[n/a]

Unit

25 mg

Molecular formula

C9H18N4O7

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USP-1A00321

Clindamycin 3-Phosphate (COLD SHIPMENT REQUIRED) (Methyl 7-chloro-6,7,8-trideoxy-6-[(2S,4R)-1-methyl-4-propylpyrrolidine-2-carboxamido]-1-thio-L-threo-alpha-D-galacto-octopyranoside 3-phosphate)

Item no.

USP-1A00321

CAS Number

[28708-34-1]

Unit

10 mg

Molecular formula

C18H34ClN2O8PS

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USP-1A06880

Orlistat Open Ring ((2S,3S,5S)-5-[(Formyl-L-leucyl)oxy]-2-hexyl-3-hydroxyhexadecanoic acid)

Item no.

USP-1A06880

Unit

25 mg

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USP-1A07520

Bicyclorisperidone Chloride (3-(4-Fluoro-2-hydroxyphenyl)-1-2-(6,7,8,9-tetrahydro-2-methyl-4-oxo-4H-pyrido- [1,2-a]pyrimidin-3-yl)ethyl-2-aza-1-azoniabicyclo[2.2.2]oct-2-ene Chloride)

Item no.

USP-1A07520

Unit

25 mg

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USP-1A07670

Viquidil (1-(6-Methoxyquinolin-4-yl)-3-[(3R,4R)-3-vinylpiperidin-4-yl]propan-1-one)

Item no.

USP-1A07670

Unit

25 mg

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USP-1A07890

Rosuvastatin Sodium Dehydro Analog (COLD SHIPMENT REQUIRED) ((S,2E,6E)-7-[4-(4-Fluorophenyl)-6-isopropyl-2-(N-methylmethylsulfonamido) pyrimidin-5-yl]-5-hydroxyhepta-2,6-dienoic acid Sodium salt)

Item no.

USP-1A07890

Unit

10 mg

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USP-1A07940

Didesmethyl Venlafaxine Hydrochloride (1-(2-amino-1-(4-methoxyphenyl)ethyl)cyclohexan-1-ol, hydrochloride)

Item no.

USP-1A07940

Unit

25 mg

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USP-1A07990

Methoxydibenzazepine (10-Methoxy-5H-Dibenz[b,f]azepine)

Item no.

USP-1A07990

CAS Number

[4698-11-7]

Unit

25 mg

Molecular formula

C15H13NO

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USP-1A08080

N-Benzyl Adrenalone (2-[Benzyl(methyl)amino]-1-(3,4-dihydroxyphenyl)ethan-1-one)

Item no.

USP-1A08080

Unit

25 mg

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USP-1A08150

Haloperidol Octanoate Hydrochloride (4-(4-Chlorophenyl)-1-[4-(4-fluorophenyl)-4-oxobutyl]piperidin-4-yl octanoate hydrochloride)

Item no.

USP-1A08150

Unit

25 mg

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USP-1A08170

Modafinil Methyl Ester (2-[(Diphenylmethyl)sulfinyl]acetic acid methyl ester)

Item no.

USP-1A08170

Unit

25 mg

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USP-1A08230

Di-O-methyl Levodopa (3,4-Dimethoxy-L-phenylalanine)

Item no.

USP-1A08230

Unit

25 mg

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USP-1A08300

10-Deacetylbaccatin III

Item no.

USP-1A08300

Unit

25 mg

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USP-1A08340

Ceftriaxone Benzothiazolyloxime ((Z)-S-Benzothiazol-2-yl 2-(2-aminothiazol-4-yl)-2-(methoxyimino)thioacetate)

Item no.

USP-1A08340

Unit

25 mg

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USP-1A08350

Chlorhexidine Amine (1-(6-Aminohexyl)-5-(4-chlorophenyl)biguanide)

Item no.

USP-1A08350

Unit

25 mg

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USP-1A08480

Succinyl Fluvoxamine ((E)-5-Methoxy-1-[4-(trifluoromethyl)phenyl]-1-pentanone O-[2-[(2-succinyl)amino]ethyl]oxime)

Item no.

USP-1A08480

Unit

25 mg

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USP-1A08510

Aminoethyl Desmethoxy Fluvoxamine Dihydrochloride ((E)-1-[4-(Trifluoromethyl)phenyl]pentan-1-one O-{2-[(2-aminoethyl)amino]ethyl} oxime dihydrochloride)

Item no.

USP-1A08510

Unit

25 mg

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USP-1A08520

Fluvoxamine Oxime ((E)-5-Methoxy-1-[4-(trifluoromethyl)phenyl]pentan-1-one oxime)

Item no.

USP-1A08520

Unit

25 mg

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USP-1A08640

Formyl Leucine (N-Formyl-L-leucine)

Item no.

USP-1A08640

Unit

25 mg

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USP-1A08700

Dihydrocinchonidine ((R)-[(2S,4S,5R)-5-Ethylquinuclidin-2-yl](quinolin-4-yl)methanol)

Item no.

USP-1A08700

Unit

25 mg

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USP-1A08850

N-Nitroso Piperazine Solution (1 mg/mL in Methanol) (1-nitrosopiperazine)

Item no.

USP-1A08850

Unit

1 mL

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USP-1A09040

N-(2,6-Dimethylphenyl)-2-(4-nitrosopiperazin-1-yl)acetamide Solution (1 mg/mL in Methanol) (N-(2,6-Dimethylphenyl)-2-(4-nitrosopiperazin-1-yl)acetamide)

Item no.

USP-1A09040

Unit

1 mL

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USP-1A09110

N-Nitroso Perindopril Solution (1 mg/mL in Acetonitrile) ((2S,3aS,7aS)-1-(N-((S)-1-ethoxy-1-oxopentan-2-yl)-N-nitroso-L-alanyl)octahydro-1H-indole-2-carboxylic acid)

Item no.

USP-1A09110

Unit

1 mL

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USP-1A09700

N-Nitroso Desmethyl Chlorpheniramine Solution (1 mg/mL in Methanol) (N-(3-(4-chlorophenyl)-3-(pyridin-2-yl)propyl)-N-methylnitrous amide)

Item no.

USP-1A09700

Unit

1 mL

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USP-1A09940

Depropylamino Hydroxy Propafenone

Item no.

USP-1A09940

Unit

25 mg

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USP-1A09950

Propafenone Glycidyl Analog

Item no.

USP-1A09950

Unit

25 mg

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USP-1A09970

Risperidone Z-Oxime (3-(2-{4-[(Z)-(2,4-Difluorophenyl)(hydroxyimino)methyl]piperidin-1-yl}ethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2- a]pyrimidin-4-one)

Item no.

USP-1A09970

Unit

25 mg

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USP-1A09990

Item no.

USP-1A09990

Unit

25 mg

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USP-1A10000

Diclofenac Alcohol

Item no.

USP-1A10000

Unit

25 mg

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USP-1A10010

Indomethacin Hydrazine Analog (1-(4-Chlorobenzoyl)-1-(4-methoxyphenyl)-2-(4-chlorobenzoyl)hydrazide)

Item no.

USP-1A10010

Unit

25 mg

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USP-1A10020

O-Acetyl Iopamidol ((S)-5-[[2-(acetyloxy)-1-oxopropyl]amino]-N,N'-bis[2-hydroxy-1-(hydroxymethyl)ethyl]-2,4,6-triiodo-1,3-Benzenedicarboxamide)

Item no.

USP-1A10020

Unit

25 mg

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USP-1A10030

Promethazine Sulfoxide

Item no.

USP-1A10030

Unit

25 mg

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USP-1A10040

Rizatriptan N-Oxide (2-{5-[(1H-1,2,4-Triazol-1-yl)methyl]-1H-indol-3-yl}-N,N-dimethylethanamine oxide)

Item no.

USP-1A10040

Unit

25 mg

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USP-1A10050

Rizatriptan N-methyl Adduct Iodide

Item no.

USP-1A10050

Unit

25 mg

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USP-1A10070

Didehydroglycopyrrolate ( (3-[2-(Cyclopent-1-en-1-yl)-2-hydroxy-2-phenylacetoxy]-1,1-dimethylpyrrolidin-1-ium bromide)

Item no.

USP-1A10070

Unit

25 mg

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USP-1A10090

Deschloro Desloratadine Hydrochloride (6,11-Dihydro-11-(piperidin-4-ylidene)-5H-benzo[5,6]cyclohepta[1,2-b]pyridine hydrochloride)

Item no.

USP-1A10090

Unit

25 mg

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USP-1A10130

Dimethyl Felodipine (Dimethyl 4-(2,3-dichlorophenyl)-2,6-dimethyl-1,4-dihydropyridine-3,5-dicarboxylate)

Item no.

USP-1A10130

Unit

25 mg

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USP-1A10140

17alpha-Hydroxyprogesterone (17-Hydroxypregn-4-ene-3,20-dione)

Item no.

USP-1A10140

Unit

25 mg

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USP-1A10150

Pivaloyl Phenylglycine ((R)-2-Phenyl-2-pivalamidoacetic acid)

Item no.

USP-1A10150

Unit

25 mg

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USP-1A10160

Epoxy Betamethasone (9,11Beta-Epoxy-17,21-dihydroxy-16Beta-methyl-9Beta-pregna-1,4-diene-3,20-dione)

Item no.

USP-1A10160

Unit

25 mg

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USP-1A10200

Dicloxacillin Penilloic Acid ((4S)-2-{[3-(2,6-Dichlorophenyl)-5-methylisoxazole-4-carboxamido]methyl}-5,5-dimethylthiazolidine-4-carboxylic acid)

Item no.

USP-1A10200

Unit

25 mg

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USP-1A10220

1-Hydroxy-2-naphthoic Acid (1-Hydroxy-naphthalene-2-carboxylic acid)

Item no.

USP-1A10220

Unit

25 mg

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USP-1A10230

Sulfaguanidine (4-Amino-N-carbamimidoylbenzenesulfonamide)

Item no.

USP-1A10230

Unit

25 mg

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