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Impurities

SynThink is a trusted producer and supplier of Pharmaceutical Reference Standards, including Impurity Standards. These materials are essential for pharmaceutical companies conducting research into the quality, stability, and biological safety of drug products. We maintain a robust inventory of API impurities, ready to support your development and regulatory needs.

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Canagliflozin Impurity F | 1071929-08-2 | Canagliflozin

,

Canagliflozin Impurity F
Please enquire for price & pack size
In Stock

CAS No.

: 1071929-08-2

Mol F.

: C18H12FIOS

Mol W.

: 422.26

Cat No.

: SA14922

Canagliflozin Iodo Impurity | 898566-17-1 | Canagliflozin

,

Canagliflozin Iodo Impurity
$85.00 25 mg
In Stock

CAS No.

: 898566-17-1

Mol F.

: C18H14FIS

Mol W.

: 408.28

Cat No.

: SA14914

Canagliflozin Keto Impurity | 1951467-28-9 | Canagliflozin

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Canagliflozin Keto Impurity
$195.00 25 mg
In Stock

CAS No.

: 1951467-28-9

Mol F.

: C24H23FO6S

Mol W.

: 458.5

Cat No.

: SA14919

Canagliflozin Monoacetyl Impurity | Canagliflozin

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Canagliflozin Monoacetyl Impurity
$135.00 25 mg
In Stock

CAS No.

Mol F.

: C26H27FO6S

Mol W.

: 486.56

Cat No.

: SA14912

Canagliflozin Monopropionyl Impurity | Canagliflozin

,

Canagliflozin Monopropionyl Impurity
Please enquire for price & pack size
In Stock

CAS No.

Mol F.

: C27H29FO6S

Mol W.

: 500.579

Cat No.

: SA14932

Canagliflozin Propionyl Impurity | 1985644-93-6 | Canagliflozin

,

Canagliflozin Propionyl Impurity
Please enquire for price & pack size
In Stock

CAS No.

: 1985644-93-6

Mol F.

: C36H41FO9S

Mol W.

: 668.769

Cat No.

: SA14933

Canagliflozin Tetraacetate | 866607-35-4 | Canagliflozin

,

Canagliflozin Tetraacetate
$135.00 25 mg
In Stock

CAS No.

: 866607-35-4

Mol F.

: C32H33FO9S

Mol W.

: 612.66

Cat No.

: SA14909

Cangliflozin Ring opening impurity | Canagliflozin

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Cangliflozin Ring opening impurity
$425.00 25 mg
In Stock

CAS No.

Mol F.

: C24H27FO6S

Mol W.

: 462.54

Cat No.

: SA14908

Cangrelor 6-Amino Triol Impurity | 163706-51-2 | Cangrelor

,

Cangrelor 6-Amino Triol Impurity
$595.00 25 mg
In Stock

CAS No.

: 163706-51-2

Mol F.

: C₁₃H₁₆F₃N₅O₄S

Mol W.

: 395.36

Cat No.

: SA29402

Cangrelor Triol Impurity | 163706-58-9 | Cangrelor

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Cangrelor Triol Impurity
$125.00 25 mg
In Stock

CAS No.

: 163706-58-9

Mol F.

: C16H22F3N5O4S2

Mol W.

: 469.5

Cat No.

: SA29406

Capecitabine EP Impurity C | 161599-46-8 | Capecitabine

,

Capecitabine EP Impurity C
$80.00 25 mg
In Stock

CAS No.

: 161599-46-8

Mol F.

: C13H16FN3O6

Mol W.

: 329.28

Cat No.

: SA37803

Capecitabine EP Impurity D | 910129-15-6 | Capecitabine

Capecitabine EP Impurity D
$95.00 25 mg
In Stock

CAS No.

: 910129-15-6

Mol F.

: C15H22FN3O6

Mol W.

: 359.35

Cat No.

: SA37804

Capecitabine EP Impurity E | 162204-30-0 | Capecitabine

Capecitabine EP Impurity E
$95.00 25 mg
In Stock

CAS No.

: 162204-30-0

Mol F.

: C15H22FN3O6

Mol W.

: 359.35

Cat No.

: SA37805

Capecitabine EP Impurity G | 162204-20-8 | Capecitabine

Capecitabine EP Impurity G
$95.00 25 mg
In Stock

CAS No.

: 162204-20-8

Mol F.

: C19H26FN3O8

Mol W.

: 443.42

Cat No.

: SA37807

Carbamazepine EP impurity A | 3564-73-6 | Carbamazepine

Carbamazepine EP impurity A
$95.00 25 mg
Limited Stock

CAS No.

: 3564-73-6

Mol F.

: C15H14N2O

Mol W.

: 238.28

Cat No.

: SA20319

Carbamazepine EP Impurity C | 1219170-51-0 | Carbamazepine

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Carbamazepine EP Impurity C
$155.00 25 mg
In Stock

CAS No.

: 1219170-51-0

Mol F.

: C16H13N3O2

Mol W.

: 279.29

Cat No.

: SA20309

Carbamazepine EP Impurity D | 256-96-2 | Carbamazepine

,

Carbamazepine EP Impurity D
$75.00 25 mg
In Stock

CAS No.

: 256-96-2

Mol F.

: C14H11N

Mol W.

: 193.24

Cat No.

: SA20310

Carbamazepine EP Impurity E | 494-19-9 | Carbamazepine

Carbamazepine EP Impurity E
$75.00 25 mg
In Stock

CAS No.

: 494-19-9

Mol F.

: C14H13N

Mol W.

: 195.26

Cat No.

: SA20311

Carbamazepine; Oxcarbazepine EP Impurity A | 298-46-4 | Carbamazepine

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Carbamazepine; Oxcarbazepine EP Impurity A
$75.00 25 mg
In Stock

CAS No.

: 298-46-4

Mol F.

: C15H12N2O

Mol W.

: 236.27

Cat No.

: SA20314

Carbidopa EP Impurity A | 555-30-6; 41372-08-1 (hydrate) | Carbidopa

Carbidopa EP Impurity A
$75.00 25 mg
In Stock

CAS No.

: 555-30-6; 41372-08-1 (hydrate)

Mol F.

: C10H13NO4

Mol W.

: 211.21

Cat No.

: SA31801

Carbidopa EP Impurity B | 18181-08-3 | Carbidopa

Carbidopa EP Impurity B
$95.00 10 mg
In Stock

CAS No.

: 18181-08-3

Mol F.

: C11H15NO4

Mol W.

: 225.24

Cat No.

: SA31802

Carbidopa EP Impurity C | 85933-19-3 | Carbidopa

Carbidopa EP Impurity C
$155.00 10 mg
In Stock

CAS No.

: 85933-19-3

Mol F.

: C11H16N2O4

Mol W.

: 240.26

Cat No.

: SA31803

Carbidopa EP Impurity D | 934371-48-9;91431-01-5(Rac) | Carbidopa

Carbidopa EP Impurity D
$255.00 10 mg
In Stock

CAS No.

: 934371-48-9;91431-01-5(Rac)

Mol F.

: C17H24N2O4

Mol W.

: 320.38

Cat No.

: SA31804

Carbidopa EP Impurity E | 52514-63-3 | Carbidopa

Carbidopa EP Impurity E
$135.00 10 mg
In Stock

CAS No.

: 52514-63-3

Mol F.

: C11H16N2O4

Mol W.

: 240.26

Cat No.

: SA31805

Carbidopa EP Impurity F | 96115-88-7; 91908-71-3 (base) | Carbidopa

Carbidopa EP Impurity F
$125.00 10 mg
In Stock

CAS No.

: 96115-88-7; 91908-71-3 (base)

Mol F.

: C12H19ClN2O4

Mol W.

: 290.74

Cat No.

: SA31806

Carbidopa EP Impurity G | 2503-44-8 | Carbidopa

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Carbidopa EP Impurity G
$95.00 25 mg
In Stock

CAS No.

: 2503-44-8

Mol F.

: C9H10O3

Mol W.

: 166.17

Cat No.

: SA31807

Carbidopa EP Impurity H | 1361017-74-4 | Carbidopa

Carbidopa EP Impurity H
$135.00 10 mg
In Stock

CAS No.

: 1361017-74-4

Mol F.

: C11H16N2O4

Mol W.

: 240.26

Cat No.

: SA31808

Carbidopa Imine Ester Impurity | Carbidopa

Carbidopa Imine Ester Impurity
$175.00 10 mg
In Stock

CAS No.

Mol F.

: C14H20N2O4

Mol W.

: 280.32

Cat No.

: SA31811

Carfilzomib 3-Phenylpropanoic Acid | 868540-16-3 | Carfilzomib

,

Carfilzomib 3-Phenylpropanoic Acid
Please enquire for price & pack size
In Stock

CAS No.

: 868540-16-3

Mol F.

: C31H42N4O6

Mol W.

: 566.69

Cat No.

: SA45008

Carisoprodol EP Impurity C | 78-26-2 | Carisoprodol

Carisoprodol EP Impurity C
$155.00 100 mg
In Stock

CAS No.

: 78-26-2

Mol F.

: C₇H₁₆O₂

Mol W.

: 132.2

Cat No.

: SA25304

Carisoprodol EP Impurity D; Meprobamate | 57-53-4 | Carisoprodol

Carisoprodol EP Impurity D; Meprobamate
$255.00 50 mg
In Stock

CAS No.

: 57-53-4

Mol F.

: C9H18N2O4

Mol W.

: 218.25

Cat No.

: SA25301

Carvedilol Nitroso Impurity | 2248746-67-8 | Carvedilol

, ,

Carvedilol Nitroso Impurity
$175.00 50 mg
In Stock

CAS No.

: 2248746-67-8

Mol F.

: C24H25N3O5

Mol W.

: 435.5

Cat No.

: SA31722

Cefaclor dimer | 142975-51-7 | Cefaclor

,

Cefaclor dimer
Please enquire for price & pack size
In Stock

CAS No.

: 142975-51-7

Mol F.

: C32H26Cl2F3N6O9S2

Mol W.

: 830.62

Cat No.

: SA18710

Cefaclor EP Impurity C | 143059-69-2 | Cefaclor

,

Cefaclor EP Impurity C
Please enquire for price & pack size
In Stock

CAS No.

: 143059-69-2

Mol F.

: C15H14ClN3O4S

Mol W.

: 367.81

Cat No.

: SA18701

Cefaclor EP Impurity F | 2882-18-0 | Cefaclor

,

Cefaclor EP Impurity F
Please enquire for price & pack size
In Stock

CAS No.

: 2882-18-0

Mol F.

: C10H8N2O

Mol W.

: 172.18

Cat No.

: SA18703

Cefaclor EP Impurity H | NA | Cefaclor

,

Cefaclor EP Impurity H
Please enquire for price & pack size
In Stock

CAS No.

: NA

Mol F.

: C23H21ClN4O5S

Mol W.

: 500.95

Cat No.

: SA18705

Cefadroxil Dimer Trifluoroacetate | 2378158-45-1 | Cefadroxil

,

Cefadroxil Dimer Trifluoroacetate
Please enquire for price & pack size
In Stock

CAS No.

: 2378158-45-1

Mol F.

: C32H32N6O9S2

Mol W.

: 708.8

Cat No.

: SA42307

Cefadroxil Ethyl Analog | 2243976-70-5 | Cefadroxil

,

Cefadroxil Ethyl Analog
Please enquire for price & pack size
In Stock

CAS No.

: 2243976-70-5

Mol F.

: C17H19N3O5S

Mol W.

: 377.4

Cat No.

: SA42305

Cefalexin EP Impurity A | 875-74-1 | Cephalexin

,

Cefalexin EP Impurity A
Please enquire for price & pack size
In Stock

CAS No.

: 875-74-1

Mol F.

: C8H9NO2

Mol W.

: 151.16

Cat No.

: SA12014

Cefalexin EP Impurity B; 7-Aminodesacetoxycephalosporanic acid | 22252-43-3 | Cephalexin

Cefalexin EP Impurity B; 7-Aminodesacetoxycephalosporanic acid
Please enquire for price & pack size
In Stock

CAS No.

: 22252-43-3

Mol F.

: C8H10N2O3S

Mol W.

: 214.24

Cat No.

: SA12001

Cefalexin EP Impurity C; Phenylglycyl Cephalexin TFA Salt | 72528-40-6(base) | Cephalexin

,

Cefalexin EP Impurity C; Phenylglycyl Cephalexin TFA Salt
Please enquire for price & pack size
In Stock

CAS No.

: 72528-40-6(base)

Mol F.

: C24H24N4O5S. C2F3O

Mol W.

: 577.55

Cat No.

: SA12009

Cefalexin EP Impurity D | 34876-35-2 | Cephalexin

Cefalexin EP Impurity D
Please enquire for price & pack size
In Stock

CAS No.

: 34876-35-2

Mol F.

: C5H6O2S

Mol W.

: 130.16

Cat No.

: SA12012

Cefalexin EP Impurity E | 146794-70-9 | Cephalexin

,

Cefalexin EP Impurity E
Please enquire for price & pack size
In Stock

CAS No.

: 146794-70-9

Mol F.

: C13H18N2O4S

Mol W.

: 298.36

Cat No.

: SA12002

Cefalexin Sulfoxide | 56193-21-6 | Cephalexin

,

Cefalexin Sulfoxide
Please enquire for price & pack size
In Stock

CAS No.

: 56193-21-6

Mol F.

: C16H17N3O5S

Mol W.

: 363.39

Cat No.

: SA12003

Cefprozil Amide | Cefprozil

,

Cefprozil Amide
Please enquire for price & pack size
In Stock

CAS No.

: NA

Mol F.

: C26H26N4O7S

Mol W.

: 538.57

Cat No.

: SA31919

Cefprozil EP Impurity A | 22818-40-2 | Cefprozil

,

Cefprozil EP Impurity A
Please enquire for price & pack size
In Stock

CAS No.

: 22818-40-2

Mol F.

: C8H9NO3

Mol W.

: 167.16

Cat No.

: SA31901

Cefprozil EP Impurity D | 106447-44-3 | Cefprozil

,

Cefprozil EP Impurity D
Please enquire for price & pack size
In Stock

CAS No.

: 106447-44-3

Mol F.

: C10H12N2O3S

Mol W.

: 240.28

Cat No.

: SA31904

Cefprozil EP Impurity M | 1605314-84-8 | Cefprozil

,

Cefprozil EP Impurity M
Please enquire for price & pack size
In Stock

CAS No.

: 1605314-84-8

Mol F.

: C21H23N3O7S

Mol W.

: 461.49

Cat No.

: SA31913

Celecoxib EP Impurity A | 170570-01-1 | Celecoxib

Celecoxib EP Impurity A
$155.00 50 mg
In Stock

CAS No.

: 170570-01-1

Mol F.

: C17H14F3N3O2S

Mol W.

: 381.37

Cat No.

: SA11305

Celecoxib Schiff’s Base Analog | Celecoxib

Celecoxib Schiff’s Base Analog
$455.00 100 mg
In Stock

CAS No.

Mol F.

: C15H17N3O2S

Mol W.

: 303.38

Cat No.

: SA11303

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