Home / Products / Impurities

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.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Glyburide, Impurities

3-Chloro Glyburide

Please enquire for price & pack size

Out of Stock

CAS No.

: 57334-89-1

Mol F.

: C23H28Cl2N3O5S

Mol W.

: 528.45

Cat No.

: SA12302

Impurities, Prochlorperazine Maleate

3-chloro-1-(10H-phenothiazin-10-yl)propan-1-one | CAS: 4091-91-2

Please enquire for price & pack size

Out of Stock

CAS No.

: 4091-91-2

Mol F.

: C15H12ClNOS

Mol W.

: 289.8

Cat No.

: SA45605

Impurities, Nitrosamine

3-Chloro-N-methyl-N-nitrosopropan-1-amine

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C4H9ClN2O

Mol W.

: 136.58

Cat No.

: SA44605

Bupropion, Impurities

3-Chlorobenzoic acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 535-80-8

Mol F.

: C7H5ClO2

Mol W.

: 156.57

Cat No.

: SA12230

Chlorpromazine, Impurities

3-Chlorodiphenylamine

$95.00 25 mg

Out of Stock

CAS No.

: 101-17-7

Mol F.

: C12H10ClN

Mol W.

: 203.67

Cat No.

: SA21601

Impurities, Trazodone

3-chlorophenylpiperazine

Please enquire for price & pack size

Out of Stock

CAS No.

: 65369-76-8

Mol F.

: C10H14Cl2N2

Mol W.

: 233.13

Cat No.

: SA30311

Clotrimazole, Impurities

3-Chlorotrityl chloride

Please enquire for price & pack size

Out of Stock

CAS No.

: 59154-29-9

Mol F.

: C19H14Cl2

Mol W.

: 313.22

Cat No.

: SA11606

Impurities, Raloxifene

3-Des[4-(2-Piperidinyl)ethoxy]benzoyl-7-[4-(2-Piperidinyl)ethoxy]benzoyl Raloxifene

Please enquire for price & pack size

Out of Stock

CAS No.

: 1391054-73-1

Mol F.

: C28H27NO4S

Mol W.

: 473.58

Cat No.

: SA24911

Impurities, Trimethoprim

3-Desmethyl Trimethoprim

$395.00 25 mg

Out of Stock

CAS No.

: 27653-69-6

Mol F.

: C13H16N4O3

Mol W.

: 276.29

Cat No.

: SA27113

Impurities, Neostigmine

3-Dimethylaminophenol

Please enquire for price & pack size

Out of Stock

CAS No.

: 99-07-0

Mol F.

: C8H11NO

Mol W.

: 137.18

Cat No.

: SA19714

Impurities, Niacin

3-Ethylpyridine

Please enquire for price & pack size

Out of Stock

CAS No.

: 536-78-7

Mol F.

: C7H9N

Mol W.

: 107.15

Cat No.

: SA33109

Erlotinib, Impurities

3-Ethynylbenzenamine hydrochloride

Please enquire for price & pack size

Out of Stock

CAS No.

: 207226-02-6

Mol F.

: C8H8ClN

Mol W.

: 153.6

Cat No.

: SA25216

Deferasirox, Impurities

3-HYDRAZINO BENZOIC ACID

Please enquire for price & pack size

Out of Stock

CAS No.

: 38235-71-1

Mol F.

: C7H8N2O2

Mol W.

: 152.151

Cat No.

: SA25115

Carbamazepine, Impurities

3-Hydroxy Carbamazepine

$495.00 25 mg

Out of Stock

CAS No.

: 68011-67-6

Mol F.

: C15H12N2O2

Mol W.

: 252.27

Cat No.

: SA20323

Carbamazepine, Impurities

3-Hydroxy Carbamazepine tert-Butyldimethylsilyl Ether

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C21H26N2O2Si

Mol W.

: 366.53

Cat No.

: SA20325

Donepezil, Impurities

3-Hydroxy Donepezil Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 2097683-67-3(Base)

Mol F.

: C24H30ClNO4

Mol W.

: 431.95

Cat No.

: SA34307

Equilin, Impurities

3-Hydroxy-6,7-dibromo 17β-Acetoxyestra-1,3,5(10)-triene

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C₂₀H₂₄Br₂O₃

Mol W.

: 472.21

Cat No.

: SA16406

Impurities, Meclofenamic Acid

3-Hydroxymethyl Meclofenamic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 67318-61-0

Mol F.

: C₁₄H₁₁Cl₂NO₃

Mol W.

: 312.15

Cat No.

: SA10602

Impurities, Neostigmine

3-Hydroxyphenyltrimethylammonium Methylsulfate

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C10H17NO4S

Mol W.

: 247.31

Cat No.

: SA19715

Impurities, Pregabalin

3-Isobutylglutaric Anhydride

$95.00 25 mg

Out of Stock

CAS No.

: 185815-59-2

Mol F.

: C9H14O3

Mol W.

: 170.21

Cat No.

: SA24836

Carbamazepine, Impurities

3-Methoxy-5H-dibenz[b,f]azepine

Please enquire for price & pack size

Out of Stock

CAS No.

: 92483-74-4

Mol F.

: C15H13NO

Mol W.

: 223.27

Cat No.

: SA20331

Impurities, Neostigmine

3-methoxy-N,N,N-trimethylbenzenaminium methyl sulfate

Please enquire for price & pack size

Out of Stock

CAS No.

: 39218-17-2

Mol F.

: C11H19NO5S

Mol W.

: 277.34

Cat No.

: SA19711

Argatroban, Impurities

3-Methyl-1,2,3,4-tetrahydroquinoline-8-sulfonic acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 153886-68-1

Mol F.

: C10H13NO3S

Mol W.

: 227.3

Cat No.

: SA48411

Impurities, Pazopanib

3-Methyl-6-nitro-2H-indazole

Please enquire for price & pack size

Out of Stock

CAS No.

: 1313372-75-6

Mol F.

: C8H7N3O2

Mol W.

: 177.16

Cat No.

: SA51312

Impurities, Leflunomide

3-Methylisoxazole-4-carboxylic Acid

Please enquire for price & pack size

Out of Stock

CAS No.

: 17153-20-7

Mol F.

: C5H5NO3

Mol W.

: 127.1

Cat No.

: SA21816

Impurities, Leflunomide

3-Methylisoxazole-4-carboxylic Acid Ethyl Ester

Please enquire for price & pack size

Out of Stock

CAS No.

: 20328-15-8

Mol F.

: C7H9NO3

Mol W.

: 155.15

Cat No.

: SA21817

Apixaban, Impurities

3-Morpholino-1-(2-nitrophenyl)-5,6-dihydropyridin-2(1H)-one

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C15H17N3O4

Mol W.

: 303.3

Cat No.

: SA39960

Apixaban, Impurities

3-Morpholino-1-(3-nitrophenyl)-5,6-dihydropyridin-2(1H)-one

Please enquire for price & pack size

Out of Stock

CAS No.

: 2443747-50-8

Mol F.

: C15H17N3O4

Mol W.

: 303.3

Cat No.

: SA39959

Apixaban, Impurities

3-Morpholino-1-(4-(2-oxo-3,4-dihydropyridin-1(2H)-yl)phenyl)-5,6-dihydropyridin-2(1H)-one

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C20H23N3O3

Mol W.

: 353.41

Cat No.

: SA39945

Apremilast, Impurities

3-Nitrophthalic Anhydride

$78.00 25 mg

Out of Stock

CAS No.

: 641-70-3

Mol F.

: C₈H₃NO₅

Mol W.

: 193.11

Cat No.

: SA30015

Impurities, Niacin

3-Nitropyridine

Please enquire for price & pack size

Out of Stock

CAS No.

: 2530-26-9

Mol F.

: C5H4N2O2

Mol W.

: 124.1

Cat No.

: SA33107

Ethinylestradiol, Impurities

3-O-Acetyl 17-Dehydroxy-dehydro 17-epi-Ethinylestradiol

Please enquire for price & pack size

Out of Stock

CAS No.

: 14030-45-6

Mol F.

: C22H24O2

Mol W.

: 320.42

Cat No.

: SA13124

Ezetimibe, Impurities

3-O-Acetyl Ezetimibe

$350.00 25 mg

Out of Stock

CAS No.

: 1044664-24-5

Mol F.

: C26H23F2NO4

Mol W.

: 451.46

Cat No.

: SA14813

Fulvestrant, Impurities

3-O-Benzyl Fulvestrant

Please enquire for price & pack size

Out of Stock

CAS No.

Mol F.

: C39H53F5O3S

Mol W.

: 696.89

Cat No.

: SA11809

Equilin, Impurities

3-O-Benzyl-17β-Dihydro Equilin

Please enquire for price & pack size

Out of Stock

CAS No.

: 26789-44-6

Mol F.

: C₂₅H₂₆O₃

Mol W.

: 374.47

Cat No.

: SA16404

Fulvestrant, Impurities

3-O-Methyl Fulvestrant

Please enquire for price & pack size

Out of Stock

CAS No.

: 1221256-46-7

Mol F.

: C33H49F5O3S

Mol W.

: 620.8

Cat No.

: SA11813

Impurities, Isoproterenol

3-O-Methylisoprenaline

Please enquire for price & pack size

Out of Stock

CAS No.

: 1212-03-9(Base);1420-27-5(HClSalt)

Mol F.

: C12H19NO3

Mol W.

: 225.28

Cat No.

: SA25903

Impurities, Naloxone

3-O-Methylnaloxone

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C20H23NO4

Mol W.

: 341.4

Cat No.

: SA45101

Fingolimod, Impurities

3-Phenethyl Fingolimod Impurity

Please enquire for price & pack size

Out of Stock

CAS No.

: 851039-24-2

Mol F.

: C35H57NO2

Mol W.

: 523.83000000000004

Cat No.

: SA34503

Atropine, Impurities

3-Phenylacetoxytropane

Please enquire for price & pack size

Out of Stock

CAS No.

: 16052-33-8

Mol F.

: C16H21NO2

Mol W.

: 259.34

Cat No.

: SA47710

Gemcitabine, Impurities

3,3-Diethoxypropionitrile

Please enquire for price & pack size

Out of Stock

CAS No.

: 2032-34-0

Mol F.

: C7H13NO2

Mol W.

: 143.18

Cat No.

: SA44511

Gemcitabine, Impurities

3,3-Difluoro-4-hydroxy-5-(hydroxymethyl)dihydrofuran-2(3H)-one

Please enquire for price & pack size

Out of Stock

CAS No.

: 939760-77-7

Mol F.

: C5H6F2O4

Mol W.

: 168.1

Cat No.

: SA44508

Gabapentin, Impurities

3,3-Pentamethylene Glutarimide

Please enquire for price & pack size

Out of Stock

CAS No.

: 1130-32-1

Mol F.

: C€H…NO‚

Mol W.

: 181.23

Cat No.

: SA22812

Impurities, Ranolazine

3,3′-(piperazine-1,4-diyl)bis(1-(2-methoxyphenoxy)propan-2-ol)

Please enquire for price & pack size

Out of Stock

CAS No.

: 333749-57-8

Mol F.

: C24H34N2O6

Mol W.

: 446.54

Cat No.

: SA26814

Impurities, Ribociclib

3,3′-(4-(Cyclopentylamino)pyrimidine-2,5-diyl)bis(prop-2-yn-1-ol)

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C15H17N3O2

Mol W.

: 271.3

Cat No.

: SA47115

Impurities, Roflumilast

3,4-Bis(difluoromethoxy) Roflumilast

Please enquire for price & pack size

Out of Stock

CAS No.

: 162401-30-1

Mol F.

: C14H8Cl2F4N2O3

Mol W.

: 399.12

Cat No.

: SA38107

Impurities, Omeprazole

3,4-Diaminoanisole

Please enquire for price & pack size

Out of Stock

CAS No.

: 102-51-2

Mol F.

: C7H10N2O

Mol W.

: 138.16999999999999

Cat No.

: SA19404

Impurities, Timolol

3,4-Dichloro-1,2,5-thiadiazole

$100.00 25 mg

Out of Stock

CAS No.

: 5728-20-1

Mol F.

: C2Cl2N2S

Mol W.

: 155.01

Cat No.

: SA23219

Dapoxetine, Impurities

3,4-Dihydro-4-phenyl-2H-benzo[h]chromene

Please enquire for price & pack size

Out of Stock

CAS No.

: 94305-25-6

Mol F.

: C19H16O

Mol W.

: 260.33

Cat No.

: SA23012

Gemcitabine, Impurities

3,5-Bis(benzyloxy)-2,2-difluoro-4-hydroxypentanoic acid

Please enquire for price & pack size

Out of Stock

CAS No.

: NA

Mol F.

: C19H20F2O5

Mol W.

: 366.4

Cat No.

: SA44513