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Impurities

SynThink is a producer and supplier of a number of pharmaceutical Reference Standards (Impurity Standards) which are required for pharmaceutical companies to study quality, stability and biological safety of pharmaceutical products. Many API Impurities are available in our stock.

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SA43311

,

2-((3R,4R)-4-Methyl-3-(methyl(7H-pyrrolo[2,3-d]pyrimidin-4-yl)amino)piperidin-1-yl)-2-oxoacetic acid
Please enquire for price & pack size
Out of Stock

CAS No.

: 2328165-36-0

Mol F.

: C15H19N5O3

Mol W.

: 317.34

Cat No.

: SA43311

SA47101

,

2-((5-((2-Aminoethyl)amino)pyridin-2-yl)amino)-7-cyclopentyl-N,N-dimethyl-7H-pyrrolo[2,3-d]pyrimidine-6-carboxamide
Please enquire for price & pack size
Out of Stock

CAS No.

: 2460738-27-4

Mol F.

: C21H28N8O

Mol W.

: 408.5

Cat No.

: SA47101

2-Triisopropylsilyloxy-5H-dibenzobfazepine

,

2-((Triisopropylsilyl)oxy)-5H-dibenzo[b,f]azepine
Please enquire for price & pack size
Out of Stock

CAS No.

: NA

Mol F.

: C23H31NOSi

Mol W.

: 365.58

Cat No.

: SA20342

2-Triisopropylsilyloxy-5H-dibenzobfazepine-5-carboxamide

,

2-((Triisopropylsilyl)oxy)-5H-dibenzo[b,f]azepine-5-carboxamide
Please enquire for price & pack size
Out of Stock

CAS No.

: NA

Mol F.

: C24H32N2O2Si

Mol W.

: 408.61

Cat No.

: SA20322

SA50813

,

2-(1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)-5-(2-phenylhydrazinyl)pyrimidine-4,6-diamine
Please enquire for price & pack size
Out of Stock

CAS No.

Mol F.

: C23H20FN9

Mol W.

: 441.5

Cat No.

: SA50813

SA50816

,

2-(1-(2-Fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)-N5-methylpyrimidine-4,5,6-triamine
Please enquire for price & pack size
Out of Stock

CAS No.

: 1702271-98-4

Mol F.

: C18H17FN8

Mol W.

: 364.4

Cat No.

: SA50816

SA51509

,

2-(2-(2,4-dichlorophenyl)-2-hydroxyethyl)isoindoline-1,3-dione
Please enquire for price & pack size
Out of Stock

CAS No.

Mol F.

: C16H11Cl2NO3

Mol W.

: 336.17

Cat No.

: SA51509

2-2-Fluoro-4-methoxy-11-biphenyl-4-ylpropanal

,

2-(2-Fluoro-4’-methoxy-[1,1’-biphenyl]-4-yl)propanal
Please enquire for price & pack size
Out of Stock

CAS No.

: 52806-74-3

Mol F.

: C16H15FO2

Mol W.

: 258.29

Cat No.

: SA14613

2-3-Trifluoromethyl-56-dihydro-124triazolo43-apyrazin-78H-yl-N-2-3-trifluoromethyl-56-dihydro-124triazolo43-apyr

,

2-(3-(Trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)-N’-(2-(3-(trifluoromethyl)-5,6-dihydro-[1,2,4]triazolo[4,3-a]pyrazin-7(8H)-yl)acetyl)acetohydrazide
Please enquire for price & pack size
Out of Stock

CAS No.

Mol F.

: C16H18F6N10O2

Mol W.

: 496.37

Cat No.

: SA10455

2-3-Formyl-4-methoxyphenyl-2-1-hydroxycyclohexylacetonitrile

,

2-(3-Formyl-4-methoxyphenyl)-2-(1-hydroxycyclohexyl)acetonitrile
Please enquire for price & pack size
Out of Stock

CAS No.

: NA

Mol F.

: C16H19NO3

Mol W.

: 273.33

Cat No.

: SA22734

2-3-methansulfonyl-1-phenylpropyl-4-methylphenyl-methansulfonate

,

2-(3-methansulfonyl-1-phenylpropyl)-4-methylphenyl methansulfonate
Please enquire for price & pack size
Out of Stock

CAS No.

: 894773-86-5

Mol F.

: C18H22O6S2

Mol W.

: 398.5

Cat No.

: SA28214

SA32013

,

2-(4-(2-methylallyloxy)-3-cyanophenyl)-4-methylthiazole-5-carboxylic acid
Please enquire for price & pack size
Out of Stock

CAS No.

: 1346238-12-7

Mol F.

: C16H14N2O3S

Mol W.

: 314.36

Cat No.

: SA32013

2-4-Benzhydryl-1-piperazinylethyl-Z-2-acetyl-3-m-nitrophenylacrylate

,

2-(4-Benzhydryl-1-piperazinyl)ethyl (Z)-2-acetyl-3-(m-nitrophenyl)acrylate
Please enquire for price & pack size
Out of Stock

CAS No.

: 90120-00-6

Mol F.

: C30H31N3O5

Mol W.

: 513.58000000000004

Cat No.

: SA29801

2-4-Fluorophenyl-5-2-methyl-5-2S3R4R5S6R-345-trihydroxy-6-hydroxymethyltetrahydro-2H-pyran-2-ylbenzylthiophene-1-oxide

,

2-(4-Fluorophenyl)-5-(2-methyl-5-((2S,3R,4R,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)benzyl)thiophene 1-oxide
Please enquire for price & pack size
Out of Stock

CAS No.

: 2459303-33-2

Mol F.

: C24H25FO6S

Mol W.

: 460.5

Cat No.

: SA14925

2-4-Hydroxyphenyl-12-diphenyl-ethanone

,

2-(4-Hydroxyphenyl)-1,2-diphenyl-ethanone
Please enquire for price & pack size
Out of Stock

CAS No.

: 5543-98-6

Mol F.

: C20H16O2

Mol W.

: 288.34

Cat No.

: SA21712

2-4-Acetyl-2-fluoro-biphenyl-4-yl-propionic-Acid-Methyl-Ester

,

2-(4’-Acetyl-2-fluoro-biphenyl-4-yl)-propionic Acid Methyl Ester
Please enquire for price & pack size
Out of Stock

CAS No.

: 215175-83-0

Mol F.

: C18H17FO3

Mol W.

: 300.32

Cat No.

: SA14615

SA32014

,

2-(5-Cyano-2-isobutoxyphenyl)-4-methyl-1,3-thiazole-5-carboxylic acid
Please enquire for price & pack size
Out of Stock

CAS No.

: NA

Mol F.

: C16H16N2O3S

Mol W.

: 316.38

Cat No.

: SA32014

SA50701

,

2-(5-Fluoro-1-(2-fluorobenzyl)-1H-pyrazolo[3,4-b]pyridin-3-yl)pyrimidine-4,5,6-triamine
Please enquire for price & pack size
Out of Stock

CAS No.

: 1350653-30-3

Mol F.

: C17H14F2N8

Mol W.

: 368.4

Cat No.

: SA50701

SA39929

,

2-(5-Hydroxy-6-oxo-1-(4-(2-oxopiperidin-1-yl)phenyl)-1,2,3,6-tetrahydropyridin-4-yl)-2-oxoacetic acid
Please enquire for price & pack size
Out of Stock

CAS No.

: 1609409-54-2

Mol F.

: C18H18N2O6

Mol W.

: 358.4

Cat No.

: SA39929

SA47119

,

2-(7-Cyclopentyl-6-(dimethylcarbamoyl)-7H-pyrrolo[2,3-d]pyrimidin-2-ylamino)-5-(piperazin-1-yl)pyridine 1-oxide
Please enquire for price & pack size
Out of Stock

CAS No.

: 2069953-39-3

Mol F.

: C23H30N8O2

Mol W.

: 450.55

Cat No.

: SA47119

2-Acetyloxybenzoic-Acid-4-Chloromethylphenyl-Ester

,

2-(Acetyloxy)benzoic Acid 4-(Chloromethyl)phenyl Ester
Please enquire for price & pack size
Out of Stock

CAS No.

: 410071-22-6

Mol F.

: C16H13ClO4

Mol W.

: 304.72

Cat No.

: SA28502

2-tert-Butylamino-3′4′-dichloropropiophenone-Hydrochloride

,

2-(tert-Butylamino)-3′,4′-dichloropropiophenone Hydrochloride
Please enquire for price & pack size
Out of Stock

CAS No.

: 1346598-72-8

Mol F.

: C13H18Cl3NO

Mol W.

: 310.65

Cat No.

: SA12211

2-tert-Butylamino-3′5′-dichloropropiophenone-Hydrochloride

,

2-(tert-Butylamino)-3′,5′-dichloropropiophenone Hydrochloride
Please enquire for price & pack size
Out of Stock

CAS No.

: 1346603-00-6

Mol F.

: C13H18Cl3NO

Mol W.

: 310.65

Cat No.

: SA12212

SA39806

,

2-[-2[(5-Nitro-2-furanyl)methylene]hydrazinyl]acetic Acid
Please enquire for price & pack size
Out of Stock

CAS No.

: 91447-38-0

Mol F.

: C‡H‡NƒO…

Mol W.

: 213.15

Cat No.

: SA39806

2-1E-2-Phenylethenyl-3-phenylmethoxy-4H-pyran-4-one

,

2-[(1E)-2-Phenylethenyl]-3-(phenylmethoxy)-4H-pyran-4-one
Please enquire for price & pack size
Out of Stock

CAS No.

: 1206102-05-7

Mol F.

: C20H16O3

Mol W.

: 304.34

Cat No.

: SA20227

2-4R6S-6-R-8-Fluoro-4-isopropyl-2-N-methylmethylsulfonamido-56-dihydrobenzohquinazolin-6-yl-22-dimethyl-13-dioxan-4-ylaceti

,

2-[(4R,6S)-6-[(R)-8-Fluoro-4-isopropyl-2-(N-methylmethylsulfonamido)-5,6-dihydrobenzo[h]quinazolin-6-yl]-2,2-dimethyl-1,3-dioxan-4-yl]acetic Acid tert-Butyl Ester
Please enquire for price & pack size
Out of Stock

CAS No.

Mol F.

: C29H40FN3O6S

Mol W.

: 577.71

Cat No.

: SA12166

SA32018

,

2-[3-(5-Ethoxycarbonyl-4-methyl-1,3-thiazol-2-yl)-4-isobutoxyphenyl]-4-methyl-1,3-thiazole-5-carboxylic acid
Please enquire for price & pack size
Out of Stock

CAS No.

: NA

Mol F.

: C22H24N2O5S2

Mol W.

: 460.57

Cat No.

: SA32018

2-4-4-Morpholinyl-125-thiadiazol-3-yl-R-Timolol-Ether

,

2-[4-(4-Morpholinyl)-1,2,5-thiadiazol-3-yl] (R)-(+)-Timolol Ether
$1,850.00 25 mg
Out of Stock

CAS No.

: 1391068-05-5

Mol F.

: C19H31N7O4S2

Mol W.

: 485.62

Cat No.

: SA23217

2-4-4-Morpholinyl-125-thiadiazol-3-yl-S-Timolol-Ether

,

2-[4-(4-Morpholinyl)-1,2,5-thiadiazol-3-yl] (S)-(-)-Timolol Ether
$1,850.00 25 mg
Out of Stock

CAS No.

: 1391068-18-0

Mol F.

: C19H31N7O4S2

Mol W.

: 485.62

Cat No.

: SA23218

2-6-2-Methoxyethoxy-4-3-ethynylphenylaminoquinazoline-7-yl-oxy-ethyl-acetate

,

2-[6-(2-Methoxyethoxy)-4-(3-ethynylphenylamino)quinazoline-7-yl-oxy]-ethyl acetate
Please enquire for price & pack size
Out of Stock

CAS No.

Mol F.

: C23H23O5N3

Mol W.

: 421.45

Cat No.

: SA25233

2-7-2-Methoxyethoxy-4-3-ethynylphenylaminoquinazoline-6-yl-oxy-ethyl-acetate

,

2-[7-(2-Methoxyethoxy)-4-(3-ethynylphenylamino)quinazoline-6-yl-oxy]-ethyl acetate
Please enquire for price & pack size
Out of Stock

CAS No.

Mol F.

: C23H23O5N3

Mol W.

: 421.45

Cat No.

: SA25232

2-4-2-Hydroxy-3-m-methoxyphenoxypropyl-1-piperazinyl-1-26-xylidino-1-ethanone

,

2-{4-[2-Hydroxy-3-(m-methoxyphenoxy)propyl]-1-piperazinyl}-1-(2,6-xylidino)-1-ethanone
Please enquire for price & pack size
Out of Stock

CAS No.

: 1393717-46-8

Mol F.

: C24H33N3O4

Mol W.

: 427.54

Cat No.

: SA26818

2-4-2-Hydroxy-3-o-methoxyphenoxypropyl-1-piperazinyl-1-24-xylidino-1-ethanone

,

2-{4-[2-Hydroxy-3-(o-methoxyphenoxy)propyl]-1-piperazinyl}-1-(2,4-xylidino)-1-ethanone
Please enquire for price & pack size
Out of Stock

CAS No.

: 95635-77-1(2HCl)

Mol F.

: C24H33N3O4

Mol W.

: 427.54

Cat No.

: SA26819

2-4-2-Hydroxy-3-p-methoxyphenoxypropyl-1-piperazinyl-1-26-xylidino-1-ethanone

,

2-{4-[2-Hydroxy-3-(p-methoxyphenoxy)propyl]-1-piperazinyl}-1-(2,6-xylidino)-1-ethanone
Please enquire for price & pack size
Out of Stock

CAS No.

: 1393717-45-7

Mol F.

: C24H33N3O4

Mol W.

: 427.54

Cat No.

: SA26817

2-Acetamido-6-hydroxypurine

2-Acetamido-6-hydroxypurine
Please enquire for price & pack size
Out of Stock

CAS No.

: 19962-37-9

Mol F.

: C7H7N5O2

Mol W.

: 193.16

Cat No.

: SA21431

2-Allyl-2-methyl-13-propanediol-Isopropylcarbamate

,

2-Allyl-2-methyl-1,3-propanediol Isopropylcarbamate
Please enquire for price & pack size
Out of Stock

CAS No.

: 1797946-61-2

Mol F.

: C₁₁H₂₁NO₃

Mol W.

: 215.29

Cat No.

: SA25307

SA38705

,

2-Amino-5-chloro-pyridin ( its chemical
Please enquire for price & pack size
Out of Stock

CAS No.

: 1072-98-6

Mol F.

: C…H…ClN‚

Mol W.

: 128.56

Cat No.

: SA38705

SA45209

,

2-Amino-6-((1R,2S)-1,2-dihydroxypropyl)-5-nitroso-5,6,7,8-tetrahydropteridin-4(1H)-one hydrochloride
Please enquire for price & pack size
Out of Stock

CAS No.

Mol F.

: C9H14N6O4.HCl

Mol W.

: 306.7

Cat No.

: SA45209

SA45211

,

2-Amino-6-((1R,2S)-1,2-dihydroxypropyl)-5,8-dinitroso-5,6,7,8-tetrahydropteridin-4(1H)-one
Please enquire for price & pack size
Out of Stock

CAS No.

: NA

Mol F.

: C9H13N7O5

Mol W.

: 299.2

Cat No.

: SA45211

SA45210

,

2-Amino-6-((1R,2S)-1,2-dihydroxypropyl)-8-nitroso-5,6,7,8-tetrahydropteridin-4(1H)-one hydrochloride
Please enquire for price & pack size
Out of Stock

CAS No.

Mol F.

: C9H14N6O4.HCl

Mol W.

: 306.7

Cat No.

: SA45210

SA45213

,

2-Amino-7,8-dihydropteridine-4,6(3H,5H)-dione
Please enquire for price & pack size
Out of Stock

CAS No.

: 1131-35-7

Mol F.

: C6H7N5O2

Mol W.

: 181.16

Cat No.

: SA45213

SA38807

,

2-Azahypoxanthine
Please enquire for price & pack size
Out of Stock

CAS No.

: 4656-86-4

Mol F.

: C4H3N5O

Mol W.

: 137.1

Cat No.

: SA38807

SA35905

,

2-Benzimidazolinethione; Lansoprazole EP Impurity E
Please enquire for price & pack size
Out of Stock

CAS No.

: 583-39-1

Mol F.

: C7H6N2S

Mol W.

: 150.19999999999999

Cat No.

: SA35905

SA35904

,

2-Benzimidazolinone; Lansoprazole EP Impurity D
Please enquire for price & pack size
Out of Stock

CAS No.

: 615-16-7

Mol F.

: C7H6N2O

Mol W.

: 134.14

Cat No.

: SA35904

,

2-Benzoyl-Clindamycin (Intermediate compound)
Please enquire for price & pack size
Out of Stock

CAS No.

Mol F.

: C25H37ClN2O6S

Mol W.

: 529.09

Cat No.

: SA29716

SA36115

,

2-Benzoylpyrrole Cyano Ketorolac Impurity
Please enquire for price & pack size
Out of Stock

CAS No.

: 1256844-82-2

Mol F.

: C14H12N2O

Mol W.

: 224.26

Cat No.

: SA36115

2-Bromo-Beclomethasone-Dipropionate

,

2-Bromo Beclomethasone Dipropionate
Please enquire for price & pack size
Out of Stock

CAS No.

: 1204582-47-7

Mol F.

: C28H36BrClO7

Mol W.

: 599.94

Cat No.

: SA15608

2-Bromo-2-Chloroacetophenone

,

2-Bromo-2′-Chloroacetophenone
Please enquire for price & pack size
Out of Stock

CAS No.

: 5000-66-8

Mol F.

: C8H6BrClO

Mol W.

: 233.49

Cat No.

: SA19602

2-Butyl-44-dimethyl-1-2-1H-tetrazol-5-yl11-biphenyl-4-ylmethyl-45-dihydroimidazol-5-one

,

2-Butyl-4,4-dimethyl-1-[[2’-(1H-tetrazol-5-yl)[1,1’-biphenyl]-4-yl]methyl]-4,5-dihydroimidazol-5-one
Please enquire for price & pack size
Out of Stock

CAS No.

: 141745-36-0

Mol F.

: C23H26N6O

Mol W.

: 402.49

Cat No.

: SA23315

SA39944

,

2-Chloro-2-(2-(4-methoxyphenyl)hydrazono)acetic acid
Please enquire for price & pack size
Out of Stock

CAS No.

: 40345-06-0

Mol F.

: C9H9ClN2O3

Mol W.

: 228.6

Cat No.

: SA39944

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