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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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Duloxetine, Impurities

Duloxetine EP Impurity B

$80.00 25 mg

In Stock

CAS No.

: 116539-55-0

Mol F.

: C8H13NOS

Mol W.

: 171.26

Cat No.

: SA36302

Duloxetine

Duloxetine EP Impurity C

$140.00 25 mg

In Stock

CAS No.

: 949095-98-1; 953028-76-7 (HCl salt)

Mol F.

: C18H19NOS

Mol W.

: 297.42

Cat No.

: SA36303

Duloxetine, Impurities

Duloxetine EP Impurity D

Please enquire for price & pack size

In Stock

CAS No.

: 90-15-3

Mol F.

: C10H8O

Mol W.

: 144.17

Cat No.

: SA36304

Duloxetine, Impurities

Duloxetine EP Impurity E

$250.00 25 mg

In Stock

CAS No.

: 1033803-59-6(base);1033719-36-6(HCl)

Mol F.

: C18H19NOS

Mol W.

: 297.42

Cat No.

: SA36305

Duloxetine

Duloxetine EP Impurity F

$200.00 25 mg

In Stock

CAS No.

: 959392-22-4

Mol F.

: C18H19NOS

Mol W.

: 297.42

Cat No.

: SA36306

Duloxetine, Impurities

Duloxetine EP Impurity G

Please enquire for price & pack size

In Stock

CAS No.

: 321-38-0

Mol F.

: C10H7F

Mol W.

: 146.16

Cat No.

: SA36307

Duloxetine, Impurities

Duloxetine N-Methyl

$80.00 25 mg

In Stock

CAS No.

: 132335-46-7(Freebase)132335-47-8(Oxalate)

Mol F.

: C19H21NOS

Mol W.

: 311.44

Cat No.

: SA36311

Duloxetine, Impurities

Duloxetine N-Methyl (R)-Isomer

$350.00 25 mg

In Stock

CAS No.

: 932013-45-1

Mol F.

: C19H21NOS

Mol W.

: 311.44

Cat No.

: SA36313

Duloxetine, Impurities

Duloxetine Phenyl Carbamate; (S)-Duloxetine Impurity A

$250.00 25 mg

In Stock

CAS No.

: 947686-09-1

Mol F.

: C‚…H‚ƒNOƒS

Mol W.

: 417.52

Cat No.

: SA36316

Dutasteride, Impurities

Dutasteride EP Impurity A

Please enquire for price & pack size

In Stock

CAS No.

: 104239-97-6

Mol F.

: C19H27NO3

Mol W.

: 317.42

Cat No.

: SA35201

Dutasteride, Impurities

Dutasteride EP Impurity C

Please enquire for price & pack size

In Stock

CAS No.

: 157307-36-3

Mol F.

: C21H31NO3

Mol W.

: 345.47

Cat No.

: SA35203

Edoxaban, Impurities

Edoxaban

Please enquire for price & pack size

In Stock

CAS No.

: 480449-70-5

Mol F.

: C24H30ClN7O4S

Mol W.

: 548.06

Cat No.

: SA33000

Edoxaban, Impurities, Nitrosamine

Edoxaban Amine Pyridyl Amide Impurity

$255.00 10 mg

In Stock

CAS No.

Mol F.

: C23H27ClN8O5S

Mol W.

: 367.83

Cat No.

: SA33040

Edoxaban, Impurities

Edoxaban Boc impurity

Please enquire for price & pack size

In Stock

CAS No.

: 480452-36-6

Mol F.

: C21H30ClN5O5

Mol W.

: 467.9

Cat No.

: SA33032

Edoxaban, Impurities

Edoxaban Boc impurity 1

Please enquire for price & pack size

In Stock

CAS No.

: 365997-36-0

Mol F.

: C15H27NO7S

Mol W.

: 365.4

Cat No.

: SA33010

Edoxaban, Impurities

Edoxaban Boc impurity 2

Please enquire for price & pack size

In Stock

CAS No.

: 365997-34-8

Mol F.

: C14H24N4O4

Mol W.

: 312.37

Cat No.

: SA33011

Edoxaban, Impurities

Edoxaban Boc impurity 3

Please enquire for price & pack size

In Stock

CAS No.

: 480450-69-9

Mol F.

: C14H25N5O3

Mol W.

: 311.38

Cat No.

: SA33012

Edoxaban, Impurities

Edoxaban Bromo Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 775280-48-3

Mol F.

: C24H30BrN7O4S

Mol W.

: 592.5

Cat No.

: SA33031

Edoxaban, Impurities

Edoxaban Des-Methyl impurity | CAS : 740794-83-6

Please enquire for price & pack size

In Stock

CAS No.

: 740794-83-6

Mol F.

: C23H28ClN7O4S

Mol W.

: 534.03

Cat No.

: SA33051

Edoxaban, Impurities

Edoxaban Dipyridine Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 2568974-02-5

Mol F.

: C23H25Cl2N7O5

Mol W.

: 550.4

Cat No.

: SA33030

Edoxaban, Impurities

Edoxaban ethyl ester

Please enquire for price & pack size

In Stock

CAS No.

: 1093351-29-1

Mol F.

: C24H29ClN6O5S

Mol W.

: 549

Cat No.

: SA33047

Edoxaban

Edoxaban Impurity D

Please enquire for price & pack size

In Stock

CAS No.

: 767625-11-6 ; 480450-86-0 (Li salt)

Mol F.

: C19H27N5O5S

Mol W.

: 437.5

Cat No.

: SA33024

Edoxaban, Impurities

Edoxaban Methyl Impurity

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C25H33ClN7O4S

Mol W.

: 690.00

Cat No.

: SA33034

Edoxaban, Impurities

Edoxaban N-Oxide

Please enquire for price & pack size

In Stock

CAS No.

: 2244103-96-4

Mol F.

: C24H30ClN7O5S

Mol W.

: 564.06

Cat No.

: SA33008

Edoxaban, Impurities

Edoxaban Pyridine Ethyl Ester Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 1243308-37-3

Mol F.

: C9H10Cl2N2O3

Mol W.

: 265.09

Cat No.

: SA33016

Edoxaban, Impurities

Edoxaban Thiazole acid impurity

Please enquire for price & pack size

In Stock

CAS No.

: 1255529-38-4

Mol F.

: C21H30ClN5O5

Mol W.

: 234.7

Cat No.

: SA33041

Edoxaban, Impurities

Edoxaban Thiazole impurity 2

Please enquire for price & pack size

In Stock

CAS No.

: 852291-41-9

Mol F.

: C7H12BrN3S

Mol W.

: 250.16

Cat No.

: SA33013

Edoxaban, Impurities

Edoxaban Thiazolo Carboxylic Acid Impurity

Please enquire for price & pack size

In Stock

CAS No.

: 720720-96-7

Mol F.

: C8H11ClN2O2S

Mol W.

: 234.7

Cat No.

: SA33058

Edoxaban, Impurities

Edoxaben Cyclohexyl Methyl Ester Impurity

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C23H27ClN6O5S

Mol W.

: 535.00

Cat No.

: SA33033

Efavirenz, Impurities

Efavirenz amino alcohol ethyl carbamate

Please enquire for price & pack size

In Stock

CAS No.

: 211563-41-6

Mol F.

: C16H15ClF3NO3

Mol W.

: 361.07

Cat No.

: SA17619

Efavirenz, Impurities

Efavirenz Pentyne Analog

Please enquire for price & pack size

In Stock

CAS No.

: 205755-86-8

Mol F.

: C14H11ClF3NO2

Mol W.

: 317.69

Cat No.

: SA17614

Efavirenz, Impurities

Efavirenz USP Related Compound A

Please enquire for price & pack size

In Stock

CAS No.

: 209414-27-7

Mol F.

: C13H11ClF3NO

Mol W.

: 289.68

Cat No.

: SA17607

Efinaconazole, Impurities

Efinaconazole

Please enquire for price & pack size

In Stock

CAS No.

: 164650-44-6

Mol F.

: C18H22F2N4O

Mol W.

: 348.39

Cat No.

: SA23605

Efinaconazole, Impurities

Efinaconazole Enantiomer

Please enquire for price & pack size

In Stock

CAS No.

: 164650-45-7

Mol F.

: C18H22F2N4O

Mol W.

: 348.39

Cat No.

: SA23603

Efinaconazole, Impurities

Efinaconazole-N-oxide

Please enquire for price & pack size

In Stock

CAS No.

: 2055038-63-4

Mol F.

: C18H22F2N4O2

Mol W.

: 364.39

Cat No.

: SA23604

Empagliflozin

Empagliflozin (tetrahydrofuran-3-yl)oxy Ortho Isomer | CAS No: 2452301-30-1

Please enquire for price & pack size

In Stock

CAS No.

: 2452301-30-1

Mol F.

: C23H27ClO7

Mol W.

: 450.9

Cat No.

: SA15157

Empagliflozin, Impurities

Empagliflozin 2S,3R,4S,5R,6R-6-(acetoxymethyl-2-(4-chloro-3-(4-(((S)-tetrahydrofuran-3-yl)oxy)benzyl)phenyl)-2-hydroxytetrahydro-2H-pyran-3,4,5-triyl triacetate

Please enquire for price & pack size

In Stock

CAS No.

: 2262435-19-6

Mol F.

: C31H35ClO12

Mol W.

: 635.06

Cat No.

: SA15146

Empagliflozin, Impurities

Empagliflozin 5-Bromo Hydroxy Analog

$199.00 10 mg

In Stock

CAS No.

: 1800196-43-3

Mol F.

: C17H16BrClO3

Mol W.

: 383.66

Cat No.

: SA15121

Empagliflozin

Empagliflozin 5-Bromo Keto Analog

$199.00 10 mg

In Stock

CAS No.

: 915095-84-0

Mol F.

: C17H14BrClO3

Mol W.

: 381.65

Cat No.

: SA15120

Empagliflozin

Empagliflozin Acetyl impurity

$205.00 25 mg

In Stock

CAS No.

: 1079083-63-8

Mol F.

: C27H29ClO10

Mol W.

: 548.97

Cat No.

: SA15126

Empagliflozin

Empagliflozin bromo impurity

$225.00 10 mg

In Stock

CAS No.

Mol F.

: C23H27BrO7

Mol W.

: 495.36

Cat No.

: SA15138

Empagliflozin, Impurities

Empagliflozin CIBPTF

$180.00 25 mg

In Stock

CAS No.

: 915095-94-2

Mol F.

: C17H16BrClO2

Mol W.

: 367.66

Cat No.

: SA15124

Empagliflozin, Impurities

Empagliflozin Dimer

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C47H54Cl2O14

Mol W.

: 913.83

Cat No.

: SA15155

Empagliflozin

Empagliflozin Enantiomer Impurity

$325.00 5 mg

Limited Stock

CAS No.

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15135

Empagliflozin

Empagliflozin Furanose alpha Isomer

$355.00 10 mg

In Stock

CAS No.

: 1620758-31-7

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15122

Empagliflozin

Empagliflozin Furanose Beta Isomer

$135.00 10 mg

In Stock

CAS No.

: 1620758-32-8

Mol F.

: C23H27ClO7

Mol W.

: 450.9

Cat No.

: SA15123

Empagliflozin, Impurities

Empagliflozin Impurity 6

$159.00 10 mg

In Stock

CAS No.

: 1620758-21-5

Mol F.

: C32H37ClO12

Mol W.

: 649.1

Cat No.

: SA15125

Empagliflozin, Impurities

Empagliflozin Impurity 86

Please enquire for price & pack size

In Stock

CAS No.

Mol F.

: C19H18ClFO6

Mol W.

: 396.79

Cat No.

: SA15151

Empagliflozin

Empagliflozin Monoacetyl Impurity

$135.00 25 mg

In Stock

CAS No.

Mol F.

: C25H29ClO8

Mol W.

: 492.94

Cat No.

: SA15118

Empagliflozin, Impurities

Empagliflozin R/S-Furanose

$258.00 25 mg

In Stock

CAS No.

: 1620758-31-7+1620758-32-8

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15104