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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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Abacavir, Impurities

Abacavir N-Methyl Impurity

$255.00 25 mg

In Stock

CAS No.

Mol F.

: C12H16N6O

Mol W.

: 260.3

Cat No.

: SA18106

Acetaminophen, Impurities

Acetaminophen

Please enquire for price & pack size

In Stock

CAS No.

: 103-90-2

Mol F.

: C8H9NO2

Mol W.

: 151.16

Cat No.

: SA37000

Empagliflozin, Impurities

Acetoxy Empagliflozin; Peracetyl Empagliflozin

$135.00 25 mg

In Stock

CAS No.

: 915095-99-7

Mol F.

: C31H35ClO11

Mol W.

: 619.04999999999995

Cat No.

: SA15115

Aspirin, Impurities

Acetylsalicylic Acid EP Impurity A; 4-Hydroxybenzoic Acid

Please enquire for price & pack size

In Stock

CAS No.

: 99-96-7

Mol F.

: C7H6O3

Mol W.

: 138.1

Cat No.

: SA28514

Aspirin, Impurities

Acetylsalicylic Anhydride

Please enquire for price & pack size

In Stock

CAS No.

: 1466-82-6

Mol F.

: C18H14O7

Mol W.

: 342.3

Cat No.

: SA28506

Aspirin, Impurities

Acetylsalicylsalicylic Acid

Please enquire for price & pack size

In Stock

CAS No.

: 530-75-6

Mol F.

: C16H12O6

Mol W.

: 300.26

Cat No.

: SA28507

Aciclovir, Impurities

Aciclovir EP Impurity A

$90.00 25 mg

In Stock

CAS No.

: 102728-64-3

Mol F.

: C10H13N5O4

Mol W.

: 267.25

Cat No.

: SA21405

Aciclovir, Impurities

Aciclovir EP Impurity B

$80.00 25 mg

In Stock

CAS No.

: 73-40-5

Mol F.

: C5H5N5O

Mol W.

: 151.13

Cat No.

: SA21406

Aciclovir, Impurities

Aciclovir EP Impurity C

$100.00 25 mg

In Stock

CAS No.

: 91702-61-3

Mol F.

: C8H11N5O3

Mol W.

: 225.21

Cat No.

: SA21407

Aciclovir, Impurities

Aciclovir EP Impurity F

$120.00 25 mg

In Stock

CAS No.

: 110104-37-5

Mol F.

: C10H13N5O4

Mol W.

: 267.25

Cat No.

: SA21408

Aciclovir, Impurities

Aciclovir EP Impurity G

$80.00 25 mg

In Stock

CAS No.

: 75128-73-3

Mol F.

: C12H15N5O5

Mol W.

: 309.28

Cat No.

: SA21409

Aciclovir, Impurities

Aciclovir EP Impurity J

$275.00 25 mg

In Stock

CAS No.

: 166762-90-9

Mol F.

: C14H16N10O4

Mol W.

: 388.35

Cat No.

: SA21412

Aciclovir, Impurities

Aciclovir EP Impurity L

$80.00 25 mg

In Stock

CAS No.

: 3056-33-5

Mol F.

: C9H9N5O3

Mol W.

: 235.2

Cat No.

: SA21416

Aciclovir, Impurities

Aciclovir EP Impurity M

$250.00 25 mg

In Stock

CAS No.

: 91702-60-2

Mol F.

: C12H15N5O5

Mol W.

: 309.28

Cat No.

: SA21417

Aciclovir, Impurities

Aciclovir EP Impurity N

$195.00 25 mg

In Stock

CAS No.

Mol F.

: C13H17N5O6

Mol W.

: 339.3

Cat No.

: SA21413

Aciclovir, Impurities

Aciclovir EP Impurity P

$150.00 25 mg

In Stock

CAS No.

: 23169-33-7

Mol F.

: C7H9N5O2

Mol W.

: 195.18

Cat No.

: SA21411

Colesevelam, Impurities

Amino Dihexylquat

$500.00 25 mg

In Stock

CAS No.

: 2170771-70-5;359436-98-9(FreeBase)

Mol F.

: C18H43Br3N3–

Mol W.

: 541.27

Cat No.

: SA10204

Edoxaban, Impurities

Amino Pyridilamide Edoxaban Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 482375-18-8

Mol F.

: C16H22ClN5O3

Mol W.

: 367.83

Cat No.

: SA33036

Colesevelam, Impurities

Aminoquat

$70.00 25 mg

In Stock

CAS No.

: 33968-67-1

Mol F.

: C9H23BrN2

Mol W.

: 239.2

Cat No.

: SA10202

Amitriptyline, Impurities

Amitriptyline EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 1210-35-1

Mol F.

: C15H12O

Mol W.

: 208.25

Cat No.

: SA37701

Amitriptyline, Impurities

Amitriptyline EP Impurity G

Please enquire for price & pack size

In Stock

CAS No.

: 1210-34-0

Mol F.

: C15H14O

Mol W.

: 210.27

Cat No.

: SA37707

Amlodipine, Impurities

Amlodipine Desfluoro Impurity

$195.00 25 mg

In Stock

CAS No.

: 88150-52-1; 103069-33-6 (HCl salt)

Mol F.

: C20H26N2O5

Mol W.

: 374.43

Cat No.

: SA30513

Amlodipine, Impurities

Amlodipine EP Impurity A

$75.00 25 mg

In Stock

CAS No.

: 88150-62-3

Mol F.

: C28H27ClN2O7

Mol W.

: 538.98

Cat No.

: SA30502

Amlodipine, Impurities

Amlodipine EP Impurity B

$125.00 25 mg

In Stock

CAS No.

: 721958-72-1

Mol F.

: C29H32ClN3O7

Mol W.

: 570.03

Cat No.

: SA30503

Amlodipine, Impurities

Amlodipine EP Impurity C

$155.00 25 mg

In Stock

CAS No.

: 721958-74-3; 2202710-78-7 (HCl Salt)

Mol F.

: C22H30ClN3O6

Mol W.

: 467.94

Cat No.

: SA30504

Amlodipine, Impurities

Amlodipine EP Impurity D

Please enquire for price & pack size

In Stock

CAS No.

: 113994-41-5

Mol F.

: C22H25ClN2O9

Mol W.

: 406.86

Cat No.

: SA30505

Amlodipine, Impurities

Amlodipine EP Impurity E

$125.00 25 mg

In Stock

CAS No.

: 140171-65-9

Mol F.

: C21H27ClN2O5

Mol W.

: 422.9

Cat No.

: SA30506

Amlodipine, Impurities

Amlodipine EP Impurity F

Please enquire for price & pack size

In Stock

CAS No.

: 140171-66-0

Mol F.

: C19H23ClN2O5

Mol W.

: 394.85

Cat No.

: SA30507

Amlodipine, Impurities

Amlodipine EP Impurity G

$75.00 25 mg

In Stock

CAS No.

: 43067-01-2

Mol F.

: C17H18ClN04

Mol W.

: 335.78

Cat No.

: SA30508

Amlodipine, Impurities

Amlodipine EP Impurity H

$155.00 25 mg

In Stock

CAS No.

: 318465-73-5

Mol F.

: C28H29ClN2O8

Mol W.

: 556.99

Cat No.

: SA30509

Amlodipine, Impurities

Amlodipine Imp 40

$295.00 25 mg

In Stock

CAS No.

: 223734-99-4

Mol F.

: C38H34ClN3O10

Mol W.

: 728.2

Cat No.

: SA30519

Amlodipine, Impurities

Amlodipine impurity 1

$200.00 25 mg

In Stock

CAS No.

: 496024-43-2

Mol F.

: C20H22ClNO5

Mol W.

: 391.85

Cat No.

: SA30516

Amlodipine, Impurities

Amlodipine Lactose Adduct (Mixture of Diastereomers)

$550.00 25 mg

In Stock

CAS No.

: 2173291-00-2

Mol F.

: C32H45ClN2O15

Mol W.

: 733.16

Cat No.

: SA30517

Amlodipine, Impurities

Amlodipine Maleate adduct

$295.00 25 mg

In Stock

CAS No.

: 400602-35-9

Mol F.

: C24H29ClN2O9

Mol W.

: 524.95

Cat No.

: SA30515

Amlodipine, Impurities

Amlodipine Mannitol Adduct

$700.00 25 mg

In Stock

CAS No.

Mol F.

: C26H37ClN2O10

Mol W.

: 573.03

Cat No.

: SA30514

Amlodipine, Impurities

Amlodipine para-Chloro Impurity

$195.00 25 mg

In Stock

CAS No.

: 90445-02-6

Mol F.

: C20H25ClN2O5

Mol W.

: 408.88

Cat No.

: SA30512

Amoxicillin, Impurities

Amoxicillin EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 551-16-6

Mol F.

: C8H12N2O3S

Mol W.

: 216.3

Cat No.

: SA15311

Amoxicillin, Impurities

Amoxicillin EP Impurity H

Please enquire for price & pack size

In Stock

CAS No.

: 205826-86-4

Mol F.

: C13H17NO4

Mol W.

: 251.28

Cat No.

: SA15320

Amoxicillin, Impurities

Amoxicillin Trihydrate

Please enquire for price & pack size

In Stock

CAS No.

: 61336-70-7

Mol F.

: C16H19N3O5S : 3(H2O)

Mol W.

: 365.4 3(18.0)

Cat No.

: SA15300

Amylmetacresol, Impurities

Amylcresol EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 876473-73-3

Mol F.

: C12H18O

Mol W.

: 178.27

Cat No.

: SA46408

Amylmetacresol, Impurities

Amylcresol EP Impurity D

Please enquire for price & pack size

In Stock

CAS No.

: 5468-96-2

Mol F.

: C9H8Cl2O2

Mol W.

: 219.06

Cat No.

: SA46401

Amylmetacresol, Impurities

Amylcresol EP Impurity E

Please enquire for price & pack size

In Stock

CAS No.

: 173851-66-6

Mol F.

: C12H16O2

Mol W.

: 192.25

Cat No.

: SA46402

Amylmetacresol, Impurities

Amylcresol EP Impurity F

Please enquire for price & pack size

In Stock

CAS No.

: 150033-77-5

Mol F.

: C12H16O2

Mol W.

: 192.25

Cat No.

: SA46403

Amylmetacresol, Impurities

Amylcresol EP Impurity G

Please enquire for price & pack size

In Stock

CAS No.

: 207974-13-8

Mol F.

: C14H10Cl4O

Mol W.

: 336.04

Cat No.

: SA46404

Amylmetacresol, Impurities

Amylcresol EP Impurity I

Please enquire for price & pack size

In Stock

CAS No.

: 173851-73-5

Mol F.

: C12H16O2

Mol W.

: 192.25

Cat No.

: SA46405

Amylmetacresol, Impurities

Amylcresol EP Impurity J

Please enquire for price & pack size

In Stock

CAS No.

: 10415-86-8

Mol F.

: C12H16O2

Mol W.

: 192.25

Cat No.

: SA46406

Amylmetacresol, Impurities

Amylmetacresol

Please enquire for price & pack size

In Stock

CAS No.

: 1300-94-3

Mol F.

: C12H18O

Mol W.

: 178.27

Cat No.

: SA46407

Amylmetacresol, Impurities

Amylmetacresol EP Impurity G; 5-methyl-2- pentylcyclohexanone

Please enquire for price & pack size

In Stock

CAS No.

: 1357600-49-7

Mol F.

: C12H22O

Mol W.

: 182.3

Cat No.

: SA46409

Amylmetacresol, Impurities

Amylmetacresol Impurity C

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C12H18O

Mol W.

: 178.27

Cat No.

: SA46410

Amylmetacresol, Impurities

Amylmetacresol Impurity C (N-1) Intermediate

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C12H16O2

Mol W.

: 192.25

Cat No.

: SA46411