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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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Efavirenz, Impurities

Efavirenz Pent-3-ene-1-yne Impurity (USP)

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Out of Stock

CAS No.

Mol F.

: C14H9ClF3NO2

Mol W.

: 315.67

Cat No.

: SA17613

Efavirenz, Impurities

Efavirenz USP Related Compound B

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Out of Stock

CAS No.

: 440124-96-9

Mol F.

: C14H11ClF3NO2

Mol W.

: 317.69

Cat No.

: SA17604

Efavirenz, Impurities

Efavirenz USP Related Compound C

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Out of Stock

CAS No.

: 391860-73-4

Mol F.

: C₁₃H₉ClF₃N

Mol W.

: 271.67

Cat No.

: SA17608

Eletriptan, Impurities

Eletriptan

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Out of Stock

CAS No.

: 143322-58-1

Mol F.

: C22H26N2O2S

Mol W.

: 382.52

Cat No.

: SA31400

Eletriptan, Impurities

Eletriptan Dehydro N-Acetyl Impurity

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Out of Stock

CAS No.

: 188113-71-5

Mol F.

: C24H26N2O3S

Mol W.

: 422.54

Cat No.

: SA31414

Eletriptan, Impurities

Eletriptan Impurity A

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Out of Stock

CAS No.

: 143322-55-8

Mol F.

: C14H18N2

Mol W.

: 214.31

Cat No.

: SA31401

Eletriptan, Impurities

Eletriptan Impurity B

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Out of Stock

CAS No.

: 143322-57-0

Mol F.

: C14H17BrN2

Mol W.

: 293.2

Cat No.

: SA31402

Eletriptan, Impurities

Eletriptan Impurity C

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Out of Stock

CAS No.

: 188113-72-6

Mol F.

: C22H24N2O2S

Mol W.

: 380.5

Cat No.

: SA31403

Eletriptan, Impurities

Eletriptan Impurity D

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Out of Stock

CAS No.

: 1225327-16-1

Mol F.

: C16H15NO2S

Mol W.

: 285.36

Cat No.

: SA31404

Eletriptan, Impurities

Eletriptan Impurity E

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Out of Stock

CAS No.

: NA

Mol F.

: C23H24N2O3

Mol W.

: 376.45

Cat No.

: SA31405

Eletriptan, Impurities

Eletriptan Impurity F

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Out of Stock

CAS No.

: 209682-64-4

Mol F.

: C₁₆H₂₂N₂

Mol W.

: 242.36

Cat No.

: SA31406

Eletriptan, Impurities

Eletriptan Impurity G

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Out of Stock

CAS No.

: NA

Mol F.

: C30H34N2O4S2

Mol W.

: 550.73

Cat No.

: SA31407

Eletriptan, Impurities

Eletriptan Impurity H

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Out of Stock

CAS No.

: NA

Mol F.

: C44H50N4O4S2

Mol W.

: 763.02

Cat No.

: SA31408

Eletriptan, Impurities

Eletriptan Impurity I

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Out of Stock

CAS No.

: NA

Mol F.

: C44H50N4O4S2

Mol W.

: 763.02

Cat No.

: SA31409

Eletriptan, Impurities

Eletriptan Impurity J

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Out of Stock

CAS No.

: 6163-58-2

Mol F.

: C21H21P

Mol W.

: 304.37

Cat No.

: SA31410

Eletriptan, Impurities

Eletriptan Impurity K

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Out of Stock

CAS No.

: 6163-63-9

Mol F.

: C21H21OP

Mol W.

: 320.36

Cat No.

: SA31411

Eletriptan, Impurities

Eletriptan Impurity L

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Out of Stock

CAS No.

: 1217641-89-8

Mol F.

: C22H26N2O3S

Mol W.

: 398.52

Cat No.

: SA31412

Eletriptan, Impurities

Eletriptan Pseudo Dimer

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Out of Stock

CAS No.

: NA

Mol F.

: C44H50N4O4S2

Mol W.

: 763.02

Cat No.

: SA31413

Eltrombopag, Impurities

Eltrombopag

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Out of Stock

CAS No.

: 496775-61-2

Mol F.

: C25H22N4O4

Mol W.

: 442.47

Cat No.

: SA51100

Eltrombopag, Impurities

Eltrombopag 2-Aminoethanol Ester impurity

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Out of Stock

CAS No.

Mol F.

: C27H27N5O4

Mol W.

: 485.54

Cat No.

: SA51102

Eltrombopag, Impurities

Eltrombopag Acyl Glucuronide

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Out of Stock

CAS No.

Mol F.

: C31H30N4O10

Mol W.

: 618.59

Cat No.

: SA51103

Eltrombopag, Impurities

Eltrombopag Amino Impurity

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Out of Stock

CAS No.

: 376592-93-7

Mol F.

: C13H11NO3

Mol W.

: 229.2

Cat No.

: SA51106

Eltrombopag, Impurities

Eltrombopag Dimer Impurity

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Out of Stock

CAS No.

Mol F.

: C50H42N8O8

Mol W.

: 882.93

Cat No.

: SA51105

Eltrombopag, Impurities

Eltrombopag Methoxy Impurity

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Out of Stock

CAS No.

: 1437383-35-1

Mol F.

: C26H24N4O4

Mol W.

: 456.49

Cat No.

: SA51108

Eltrombopag, Impurities

Eltrombopag Methyl Ester

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Out of Stock

CAS No.

: 1246929-01-0

Mol F.

: C26H24N4O4

Mol W.

: 456.49

Cat No.

: SA51101

Eltrombopag, Impurities

Eltrombopag Olamine

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Out of Stock

CAS No.

: 496775-62-3

Mol F.

: C25H22N4O4.2(C2H7NO)

Mol W.

: 564.63

Cat No.

: SA51109

Eltrombopag, Impurities

Eltrombopag Pyrazole Impurity

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Out of Stock

CAS No.

: 277299-70-4

Mol F.

: C12H14N2O

Mol W.

: 202.25

Cat No.

: SA51107

Elvitegravir, Impurities

Elvitegravir 2-Chloro Dimethoxy Impurity; 2-Chloro-DME-II impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C17H17ClO3

Mol W.

: 304.8

Cat No.

: SA48503

Elvitegravir, Impurities

Elvitegravir 2-fluoro impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C25H28FNO5

Mol W.

: 441.5

Cat No.

: SA48512

Elvitegravir, Impurities

Elvitegravir 2,3-difluro Impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C25H27F2NO5

Mol W.

: 459.5

Cat No.

: SA48514

Elvitegravir, Impurities

Elvitegravir 3-Chloro Dimethoxy Impurity; Elvitegravir 3-Chloro-DME-II impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C17H17ClO3

Mol W.

: 304.8

Cat No.

: SA48504

Elvitegravir, Impurities

Elvitegravir 4-Chloro Dimethoxy Impurity; Elvitegravir 4-Chloro-DME-II

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Out of Stock

CAS No.

: NA

Mol F.

: C17H17ClO3

Mol W.

: 304.8

Cat No.

: SA48505

Elvitegravir, Impurities

Elvitegravir Alanine Impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C23H23ClFNO5

Mol W.

: 447.9

Cat No.

: SA48519

Elvitegravir, Impurities

Elvitegravir Amino Ethanol

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Out of Stock

CAS No.

: NA

Mol F.

: C22H21ClFNO5

Mol W.

: 433.9

Cat No.

: SA48515

Elvitegravir, Impurities

Elvitegravir Amino Methyl Impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C21H19ClFNO4

Mol W.

: 403.8

Cat No.

: SA48513

Elvitegravir, Impurities

Elvitegravir Difluoro impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C20H20F2O5

Mol W.

: 378.4

Cat No.

: SA48508

Elvitegravir, Impurities

Elvitegravir Dimer Impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C35H30Cl2F2O7

Mol W.

: 671.5

Cat No.

: SA48516

Elvitegravir, Impurities

Elvitegravir Dimethoxy Impurity; Elvitegravir DME-2 Impurity

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Out of Stock

CAS No.

: 1551444-36-0

Mol F.

: C17H16ClFO3

Mol W.

: 322.8

Cat No.

: SA48500

Elvitegravir, Impurities

Elvitegravir Dimethoxy Keto Impurity; Elvitegravir DME-I Impurity

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Out of Stock

CAS No.

: 680610-70-2

Mol F.

: C15H12ClFO3

Mol W.

: 294.7

Cat No.

: SA48502

Elvitegravir, Impurities

Elvitegravir DME Acid impurity

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Out of Stock

CAS No.

: 949465-79-6

Mol F.

: C16H14ClFO4

Mol W.

: 324.7

Cat No.

: SA48507

Elvitegravir, Impurities

Elvitegravir ELT-III

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Out of Stock

CAS No.

: 697761-98-1

Mol F.

: C23H23ClFNO5

Mol W.

: 447.9

Cat No.

: SA48511

Elvitegravir, Impurities

Elvitegravir Ethyl Ester Impurity; Elvitegravir ELT-II Std

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Out of Stock

CAS No.

: 949465-91-2

Mol F.

: C25H27ClFNO5

Mol W.

: 475.94

Cat No.

: SA48510

Elvitegravir, Impurities

Elvitegravir Hydroxy impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C16H14ClFO3

Mol W.

: 308.7

Cat No.

: SA48501

Elvitegravir, Impurities

Elvitegravir Leucinol Impurity

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Out of Stock

CAS No.

: 7533-40-6

Mol F.

: C6H15NO

Mol W.

: 117.19

Cat No.

: SA48506

Elvitegravir, Impurities

Elvitegravir Methyl Ester Impurity

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Out of Stock

CAS No.

: 1350172-03-0

Mol F.

: C24H25ClFNO5

Mol W.

: 461.9

Cat No.

: SA48517

Elvitegravir, Impurities

Elvitegravir silyl (ELT-II) Impuritys

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Out of Stock

CAS No.

: NA

Mol F.

: C28H35ClFNO5Si

Mol W.

: 548.1

Cat No.

: SA48518

Elvitegravir, Impurities

Elvitegravir Toluene Aduct Impurity

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Out of Stock

CAS No.

: NA

Mol F.

: C19H18ClFO3

Mol W.

: 348.8

Cat No.

: SA48509

Empagliflozin, Impurities

Empagliflozin

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Out of Stock

CAS No.

: 864070-44-0

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15103

Empagliflozin, Impurities

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

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Out of Stock

CAS No.

: 2452301-30-1

Mol F.

: C23H27ClO7

Mol W.

: 450.9

Cat No.

: SA15157

Empagliflozin, Impurities

Empagliflozin Dimer

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Out of Stock

CAS No.

Mol F.

: C47H54Cl2O14

Mol W.

: 913.83

Cat No.

: SA15155