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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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Impurities, Molnupiravir

Cytidine ester

Please enquire for price & pack size

In Stock

CAS No.

: 886538-46-1

Mol F.

: C13H19N3O6

Mol W.

: 313.31

Cat No.

: SA46206

Impurities, Tenofovir

D-Alanine

Please enquire for price & pack size

In Stock

CAS No.

: 338-69-2

Mol F.

: C3H7NO2

Mol W.

: 89.09

Cat No.

: SA36932

Empagliflozin, Impurities

D-Glucono-1,4-lactone

Please enquire for price & pack size

In Stock

CAS No.

: 1198-69-2

Mol F.

: C6H10O6

Mol W.

: 178.1

Cat No.

: SA15140

Budesonide, Impurities

D-Home-BD-06; impurity 4

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C21H28O6

Mol W.

: 376.44

Cat No.

: SA14133

Dacarbazine, Impurities

Dacarbazine EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 1797817-35-6

Mol F.

: C4H3N5O

Mol W.

: 137.1

Cat No.

: SA38801

Dacarbazine, Impurities

Dacarbazine Lactose Adduct

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C16H26N4O11

Mol W.

: 450.4

Cat No.

: SA38805

Dapagliflozin, Impurities

Dapagliflozin 1,4- Anhydro impurity; Dapagliflozin Beta furanose S3B

$385.00 25 mg

In Stock

CAS No.

: 1469910-70-0

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15023

Dapagliflozin, Impurities

Dapagliflozin 4-Acetyl imurity

$210.00 10 mg

In Stock

CAS No.

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15047

Dapagliflozin, Impurities

Dapagliflozin 6-Methoxy Triacetate Impurity

$195.00 25 mg

In Stock

CAS No.

Mol F.

: C28H33ClO9

Mol W.

: 549.01

Cat No.

: SA15035

Dapagliflozin, Impurities

Dapagliflozin Alpha Furanose Isomer

Please enquire for price & pack size

In Stock

CAS No.

: 1469910-83-5

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15031

Dapagliflozin, Impurities

Dapagliflozin Bromo Keto impurity (2-ethoxy)

$258.00 25 mg

In Stock

CAS No.

: 1404477-10-6

Mol F.

: C15H12BrClO2

Mol W.

: 339.62

Cat No.

: SA15006

Dapagliflozin, Impurities

Dapagliflozin C-2 Epimer

Please enquire for price & pack size

In Stock

CAS No.

: 2133407-75-5

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15024

Dapagliflozin, Impurities

Dapagliflozin Des-Ethoxy Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 1185339-44-9

Mol F.

: C19H21ClO5

Mol W.

: 364.82

Cat No.

: SA15071

Dapagliflozin, Impurities

Dapagliflozin Deschloro Impurity

$256.00 50 mg

In Stock

CAS No.

: 2444702-80-9

Mol F.

: C21H26O6

Mol W.

: 374.43

Cat No.

: SA15014

Dapagliflozin, Impurities

Dapagliflozin enantiomer

$325.00 5 mg

In Stock

CAS No.

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15027

Dapagliflozin, Impurities

Dapagliflozin Hydroxy (Benzylic) Impurity

$215.00 5 mg

In Stock

CAS No.

: 1204222-85-4

Mol F.

: C21H25ClO7

Mol W.

: 424.87

Cat No.

: SA15012

Dapagliflozin, Impurities

Dapagliflozin impurity C; 1α-Methoxy Dapagliflozin, 1α-O-Methyl Dapagliflozin

$169.00 25 mg

In Stock

CAS No.

: 714269-57-5; 461432-24-6

Mol F.

: C22H27ClO7

Mol W.

: 438.9

Cat No.

: SA15010

Dapagliflozin, Impurities

Dapagliflozin Impurity D; Dapagliflozin alfa-Isomer; 1R-Dapagliflozin

Please enquire for price & pack size

In Stock

CAS No.

: 1373321-04-0

Mol F.

: C21H25ClO6

Mol W.

: 408.87

Cat No.

: SA15008

Dapagliflozin, Impurities

Dapagliflozin Keto Impurity

$239.00 10 mg

In Stock

CAS No.

: 2169998-23-4

Mol F.

: C21H23ClO7

Mol W.

: 422.86

Cat No.

: SA15011

Dapagliflozin, Impurities

Dapagliflozin Methoxy Impurity

$195.00 25 mg

In Stock

CAS No.

: 333359-90-3

Mol F.

: C20H23ClO6

Mol W.

: 394.85

Cat No.

: SA15054

Dapagliflozin, Impurities

Dapagliflozin Methoxy Tetraacetate Impurity

$298.00 25 mg

In Stock

CAS No.

: 872980-38-6

Mol F.

: C28H31ClO10

Mol W.

: 562.99

Cat No.

: SA15053

Dapagliflozin, Impurities

Dapagliflozin MonoAcetyl Impurity, Dapagliflozin Acetyl Impurity

$175.00 25 mg

In Stock

CAS No.

: 1632287-34-3

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15028

Dapagliflozin, Impurities

Dapagliflozin Nosyl Impurity

$185.00 10 mg

In Stock

CAS No.

Mol F.

: C33H32ClNO14S

Mol W.

: 734.12

Cat No.

: SA15052

Dapagliflozin, Impurities

Dapagliflozin open sugar impurity

Please enquire for price & pack size

In Stock

CAS No.

: 2100872-88-4

Mol F.

: C21H27ClO7

Mol W.

: 426.89

Cat No.

: SA15005

Dapagliflozin, Impurities

Dapagliflozin Related Compound A – USP; Dapagliflozin Bromolactone impurity

$240.00 10 mg

In Stock

CAS No.

: 1807632-95-6

Mol F.

: C21H25BrO6

Mol W.

: 453.32

Cat No.

: SA15003

Dapagliflozin, Impurities

Dapagliflozin Tetraacetate

$147.00 25 mg

In Stock

CAS No.

: 461432-25-7

Mol F.

: C29H33ClO10

Mol W.

: 577.02

Cat No.

: SA15015

Dapagliflozin, Impurities

Dapagliflozin TNG; α-D-Glucopyranoside

$225.00 10 mg

In Stock

CAS No.

: 714269-58-6

Mol F.

: C30H35ClO11

Mol W.

: 607.05

Cat No.

: SA15033

Dapagliflozin, Impurities

Dapagliflozin Tri acetate

$348.00 25 mg

In Stock

CAS No.

Mol F.

: C27H31ClO9

Mol W.

: 534.98

Cat No.

: SA15029

Dapagliflozin, Impurities

Dapagliflozin Triacetate Impurity

$170.00 10 mg

In Stock

CAS No.

: 1443341-94-3

Mol F.

: C27H31ClO9

Mol W.

: 535

Cat No.

: SA15050

Darifenacin, Impurities

Darifenacin Hbr. Impurity G

Please enquire for price & pack size

In Stock

CAS No.

: 2468796-89-4

Mol F.

: C28H31BrN2O2

Mol W.

: 507.47

Cat No.

: SA43501

Darunavir, Impurities

Darunavir Diamino (2R,3R) Isomer

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C20H29N3O3S

Mol W.

: 391.53

Cat No.

: SA39409

Darunavir, Impurities

Darunavir Diamino (2S,3S) Isomer

Please enquire for price & pack size

In Stock

CAS No.

: 192800-79-6

Mol F.

: C20H29N3O3S

Mol W.

: 391.53

Cat No.

: SA39408

Clarithromycin, Impurities

De(cladinosyl) Clarithromycin

Please enquire for price & pack size

In Stock

CAS No.

: 118058-74-5

Mol F.

: C30H55NO10

Mol W.

: 589.76

Cat No.

: SA17204

Impurities, Linezolid

Deacetamide Linezolid Azide

Please enquire for price & pack size

In Stock

CAS No.

: 168828-84-0

Mol F.

: C₁₄H₁₆FN₅O₃

Mol W.

: 321.31

Cat No.

: SA17514

Diltiazem, Impurities

Deacetyl Diltiazem N-Oxide

$255.00 25 mg

In Stock

CAS No.

: 122619-90-3

Mol F.

: C20H24N2O4S

Mol W.

: 388.48

Cat No.

: SA19514

Impurities, Linezolid

Deacetyl Linezolid

Please enquire for price & pack size

In Stock

CAS No.

: 168828-90-8

Mol F.

: C₁₄H₁₈FN₃O₃

Mol W.

: 295.31

Cat No.

: SA17511

Impurities, Telmisartan

Debenzoic Acid Bromotelmisartan

Please enquire for price & pack size

In Stock

CAS No.

: 1004548-55-3

Mol F.

: C₂₆H₂₅BrN₄

Mol W.

: 473.41

Cat No.

: SA33919

Impurities, Lorcaserin

Dechloro rec-Lorcaserin

Please enquire for price & pack size

In Stock

CAS No.

: NA

Mol F.

: C11H16ClN

Mol W.

: 197.7

Cat No.

: SA18800

Impurities, Loteprednol

Dechloromethyl Loteprednol Etabonate; Prednisolone 17-acid-17-ethylcarbonate

Please enquire for price & pack size

In Stock

CAS No.

: 133991-63-6

Mol F.

: C23H30O7

Mol W.

: 418.48

Cat No.

: SA27605

Colesevelam, Impurities

Decylamine hydrochloride

$70.00 25 mg

In Stock

CAS No.

: 143-09-9

Mol F.

: C10H24NCl

Mol W.

: 192.75

Cat No.

: SA10205

Colesevelam, Impurities

Decylaminoquat

$400.00 25 mg

In Stock

CAS No.

Mol F.

: C19H43BrN2

Mol W.

: 379.46

Cat No.

: SA10203

Deferasirox, Impurities

Deferasirox 1,2-isomer

Please enquire for price & pack size

In Stock

CAS No.

: 201530-78-1

Mol F.

: C21H15N3O4

Mol W.

: 373.36

Cat No.

: SA25106

Deferasirox, Impurities

Deferasirox 1,3-isomer

Please enquire for price & pack size

In Stock

CAS No.

: 2254105-61-6

Mol F.

: C21H15N3O4

Mol W.

: 373.36

Cat No.

: SA25107

Deferasirox, Impurities

Deferasirox Benzamide Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 65-45-2

Mol F.

: C7H7NO2

Mol W.

: 137.14

Cat No.

: SA25112

Deferasirox, Impurities

Deferasirox Benzoxazin Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 1218-69-5

Mol F.

: C14H9NO3

Mol W.

: 239.23

Cat No.

: SA25101

Deferasirox, Impurities

Deferasirox Diacyl Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 1972-71-0

Mol F.

: C14H11NO4

Mol W.

: 257.24

Cat No.

: SA25104

Deferasirox, Impurities

Deferasirox Ethyl Ester

Please enquire for price & pack size

In Stock

CAS No.

: 201530-79-2

Mol F.

: C23H19N3O4

Mol W.

: 401.41

Cat No.

: SA25102

Dolutegravir, Impurities

Defluoro Dolutegravir

Please enquire for price & pack size

In Stock

CAS No.

: 1863916-88-4

Mol F.

: C20H20FN3O5

Mol W.

: 401.39

Cat No.

: SA20209

Impurities, Linezolid

Defluoro Linezolid

Please enquire for price & pack size

In Stock

CAS No.

: 556801-15-1

Mol F.

: C₁₆H₂₁N₃O₄

Mol W.

: 319.36

Cat No.

: SA17502

Impurities, Isoproterenol

Dehydroxy Isoproterenol

Please enquire for price & pack size

In Stock

CAS No.

: 3506-32-9(Base);5178-52-9(HClsalt)

Mol F.

: C11H17NO2

Mol W.

: 195.26

Cat No.

: SA25902