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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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Ertugliflozin, Impurities

Ertugliflozin Impuity SA36802

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Out of Stock

CAS No.

Mol F.

: C28H33ClO13

Mol W.

: 613

Cat No.

: SA36802

Ertugliflozin, Impurities

Ertugliflozin isomer Impurity

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Out of Stock

CAS No.

Mol F.

: C22H25ClO7

Mol W.

: 436.88

Cat No.

: SA36801

Escitalopram, Impurities

Escitalopram acid

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Out of Stock

CAS No.

Mol F.

: C20H21FN2O3

Mol W.

: 356.39

Cat No.

: SA21214

Escitalopram, Impurities

Escitalopram EP Impurity A

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Out of Stock

CAS No.

: 64372-56-1

Mol F.

: C20H23FN2O2

Mol W.

: 342.41

Cat No.

: SA21201

Escitalopram, Impurities

Escitalopram EP Impurity B

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Out of Stock

CAS No.

: 411221-53-9(base);1332724-03-4(oxalatesalt)

Mol F.

: C20H21FN2O2

Mol W.

: 340.39

Cat No.

: SA21202

Escitalopram, Impurities

Escitalopram EP Impurity C

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Out of Stock

CAS No.

: 372941-54-3(base)

Mol F.

: C20H19FN2O2

Mol W.

: 338.37

Cat No.

: SA21203

Escitalopram, Impurities

Escitalopram EP Impurity D

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Out of Stock

CAS No.

: 144025-14-9(HClsalt);1188264-72-3(HBrsalt)

Mol F.

: C19H20ClFN2O

Mol W.

: 346.83

Cat No.

: SA21204

Escitalopram, Impurities

Escitalopram EP Impurity E

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Out of Stock

CAS No.

: 103146-25-4(base);103146-26-5(HBrsalt)

Mol F.

: C20H23FN2O2

Mol W.

: 342.41

Cat No.

: SA21205

Escitalopram, Impurities

Escitalopram EP Impurity F

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Out of Stock

CAS No.

: 2102609-59-4

Mol F.

: C14H18N2O2

Mol W.

: 246.3

Cat No.

: SA21206

Escitalopram, Impurities

Escitalopram EP Impurity G

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Out of Stock

CAS No.

: 1329745-98-3(base)

Mol F.

: C25H35FN2O2

Mol W.

: 412.54

Cat No.

: SA21207

Escitalopram, Impurities

Escitalopram EP Impurity K

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Out of Stock

CAS No.

: 128196-02-1(base);219861-53-7(oxalatesalt)

Mol F.

: C20H21FN2O

Mol W.

: 324.39

Cat No.

: SA21210

Escitalopram, Impurities

Escitalopram EP Impurity L

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Out of Stock

CAS No.

: 1346617-30-8

Mol F.

: C20H22N2O

Mol W.

: 306.39999999999998

Cat No.

: SA21211

Escitalopram, Impurities

Escitalopram EP Impurity M

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Out of Stock

CAS No.

: 440121-09-5

Mol F.

: C20H22FNO3

Mol W.

: 343.39

Cat No.

: SA21212

Escitalopram, Impurities

Escitalopram Oxalate

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Out of Stock

CAS No.

: 219861-08-2(OxalataSalt);128196-01-0(Base)

Mol F.

: C22H23FN2O5

Mol W.

: 414.43

Cat No.

: SA21213

Eslicarbazepine, Impurities

Eslicarbazepine Acetate

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Out of Stock

CAS No.

: 236395-14-5

Mol F.

: C17H16N2O3

Mol W.

: 296.32

Cat No.

: SA28801

Eslicarbazepine, Impurities

Eslicarbazepine Acetate Nitroso Impurity

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Out of Stock

CAS No.

Mol F.

: C16H14N2O3

Mol W.

: 282.3

Cat No.

: SA28809

Estrone, Impurities

Estra-5(10),9(11)-diene-3,17-dione-3-ethylene Ketal

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Out of Stock

CAS No.

: 5571-36-8

Mol F.

: C20H26O3

Mol W.

: C20H26O3

Cat No.

: SA16011

Estradiol, Impurities

Estradiol 3,17-Divalerate; Estradiol Valerate Impurity E

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Out of Stock

CAS No.

: 63042-28-4

Mol F.

: C28H40O4

Mol W.

: 440.61

Cat No.

: SA13214

Estradiol Valerate, Impurities

Estradiol Divalerate 6-Keto Impurity

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Out of Stock

CAS No.

: 1350468-78-8

Mol F.

: C28H38O5

Mol W.

: 454.6

Cat No.

: SA14012

Estradiol Valerate, Impurities

Estradiol Divalerate 6a-Hydroxy Impurity

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Out of Stock

CAS No.

: 1350468-75-5

Mol F.

: C28H40O5

Mol W.

: 456.61

Cat No.

: SA14013

Estradiol hemihydrate, Impurities

Estradiol hemihydrate EP Impurity D

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Out of Stock

CAS No.

: 791-69-5

Mol F.

: C18H22O2

Mol W.

: 270.67

Cat No.

: SA14304

Estradiol Valerate, Impurities

Estradiol Valerate

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Out of Stock

CAS No.

: 979-32-8

Mol F.

: C23H32O3

Mol W.

: 356.5

Cat No.

: SA14018

Estradiol Valerate, Impurities

Estradiol Valerate 6-Keto Impurity

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Out of Stock

CAS No.

: 1313382-51-2

Mol F.

: C23H30O4

Mol W.

: 370.48

Cat No.

: SA14017

Estradiol Valerate, Impurities

Estradiol Valerate 6α-Hydroxy Impurity

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Out of Stock

CAS No.

: 1313382-26-1

Mol F.

: C23H32O4

Mol W.

: 372.5

Cat No.

: SA14015

Estradiol Valerate, Impurities

Estradiol Valerate 6β-Hydroxy Impurity

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Out of Stock

CAS No.

: 1313382-32-9

Mol F.

: C23H32O4

Mol W.

: 372.5

Cat No.

: SA14016

Estradiol Valerate, Impurities

Estradiol Valerate EP Impurity A

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Out of Stock

CAS No.

: 50-28-2

Mol F.

: C18H24O2

Mol W.

: 272.38

Cat No.

: SA14001

Estradiol Valerate, Impurities

Estradiol Valerate EP Impurity B

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Out of Stock

CAS No.

: 21881-45-8

Mol F.

: C23H32O3

Mol W.

: 356.5

Cat No.

: SA14002

Estradiol Valerate, Impurities

Estradiol Valerate EP Impurity C

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Out of Stock

CAS No.

: 95959-20-9

Mol F.

: C23H30O3

Mol W.

: 354.48

Cat No.

: SA14003

Estradiol Valerate, Impurities

Estradiol Valerate EP Impurity D

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Out of Stock

CAS No.

: 1359847-37-2

Mol F.

: C24H34O3

Mol W.

: 370.52

Cat No.

: SA14004

Estradiol Valerate, Impurities

Estradiol Valerate EP Impurity E

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Out of Stock

CAS No.

: 63042-28-4

Mol F.

: C28H40O4

Mol W.

: 440.61

Cat No.

: SA14005

Estradiol Valerate, Impurities

Estradiol valerate EP Impurity G

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Out of Stock

CAS No.

: 1313382-25-0

Mol F.

: C23H30O3

Mol W.

: 354.48

Cat No.

: SA14007

Estradiol Valerate, Impurities

Estradiol Valerate EP Impurity I

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Out of Stock

CAS No.

Mol F.

: C49H66O5

Mol W.

: 735.05

Cat No.

: SA14009

Estradiol, Impurities

Estradiol Valerate Impurity C

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Out of Stock

CAS No.

: 95959-20-9

Mol F.

: C23H30O3

Mol W.

: 354.48

Cat No.

: SA13210

Estriol, Impurities

Estriol

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Out of Stock

CAS No.

: 50-27-1

Mol F.

: C18H24O3

Mol W.

: 288.38

Cat No.

: SA16100

Estriol, Impurities

Estriol EP Impurity A

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Out of Stock

CAS No.

: 246021-20-5

Mol F.

: C18H22O3

Mol W.

: 286.37

Cat No.

: SA16101

Estriol, Impurities

Estriol EP Impurity B

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Out of Stock

CAS No.

: 53-16-7

Mol F.

: C18H22O2

Mol W.

: 270.37

Cat No.

: SA16102

Estriol, Impurities

Estriol EP Impurity C

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Out of Stock

CAS No.

: 1474-53-9

Mol F.

: C19H26O3

Mol W.

: 302.41

Cat No.

: SA16103

Estriol, Impurities

Estriol EP Impurity D

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Out of Stock

CAS No.

: 50-28-2

Mol F.

: C18H24O2

Mol W.

: 272.38

Cat No.

: SA16104

Estriol, Impurities

Estriol EP Impurity E

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Out of Stock

CAS No.

: 1228-72-4

Mol F.

: C18H24O3

Mol W.

: 288.38

Cat No.

: SA16105

Estriol, Impurities

Estriol EP Impurity F

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Out of Stock

CAS No.

: 547-81-9

Mol F.

: C18H24O3

Mol W.

: 288.38

Cat No.

: SA16106

Estriol, Impurities

Estriol EP Impurity G

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Out of Stock

CAS No.

: 793-89-5

Mol F.

: C18H24O3

Mol W.

: 288.38

Cat No.

: SA16107

Estriol, Impurities

Estriol EP Impurity H

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Out of Stock

CAS No.

: 566-76-7

Mol F.

: C18H22O3

Mol W.

: 286.37

Cat No.

: SA16108

Estriol, Impurities

Estriol EP Impurity I

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Out of Stock

CAS No.

: 15370-49-7

Mol F.

: C18H22O3

Mol W.

: 286.37

Cat No.

: SA16109

Estrone, Impurities

Estrone sodium sulfate

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Out of Stock

CAS No.

: 438-67-5

Mol F.

: C18H21NaO5S

Mol W.

: C18H21NaO5S

Cat No.

: SA16010

Ethacrynic Acid, Impurities

Ethacrynic Acid

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Out of Stock

CAS No.

: 58-54-8

Mol F.

: C13H12Cl2O4

Mol W.

: 303.14

Cat No.

: SA30900

Ethacrynic Acid, Impurities

Ethacrynic Acid EP Impurity A

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Out of Stock

CAS No.

: 1217-67-0

Mol F.

: C12H12Cl2O4

Mol W.

: 291.13

Cat No.

: SA30901

Ethacrynic Acid, Impurities

Ethacrynic Acid EP Impurity B

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Out of Stock

CAS No.

: 27929-18-6

Mol F.

: C₁₃H₁₃Cl₃O₄

Mol W.

: 339.6

Cat No.

: SA30902

Ethacrynic Acid, Impurities

Ethacrynic Acid EP Impurity C

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Out of Stock

CAS No.

: 25355-92-4

Mol F.

: C26H24Cl4O8

Mol W.

: 606.28

Cat No.

: SA30903

Ethacrynic Acid, Impurities

Ethacrynic Acid Impurity E

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Out of Stock

CAS No.

: 55507-91-0

Mol F.

: C12H10Cl2O4

Mol W.

: 289.11

Cat No.

: SA30904

Bumetanide, Impurities

Ethacrynic Acid L-Cysteine Adduct

Please enquire for price & pack size

Out of Stock

CAS No.

: 51246-37-8

Mol F.

: C16H19Cl2NO6S

Mol W.

: 424.3

Cat No.

: SA24407