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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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Elvitegravir, Impurities

Elvitegravir Alanine Impurity

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CAS No.

: NA

Mol F.

: C23H23ClFNO5

Mol W.

: 447.9

Cat No.

: SA48519

Elvitegravir, Impurities

Elvitegravir Amino Ethanol

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CAS No.

: NA

Mol F.

: C22H21ClFNO5

Mol W.

: 433.9

Cat No.

: SA48515

Elvitegravir, Impurities

Elvitegravir Amino Methyl Impurity

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CAS No.

: NA

Mol F.

: C21H19ClFNO4

Mol W.

: 403.8

Cat No.

: SA48513

Elvitegravir, Impurities

Elvitegravir Difluoro impurity

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CAS No.

: NA

Mol F.

: C20H20F2O5

Mol W.

: 378.4

Cat No.

: SA48508

Elvitegravir, Impurities

Elvitegravir Dimer Impurity

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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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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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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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CAS No.

: 949465-79-6

Mol F.

: C16H14ClFO4

Mol W.

: 324.7

Cat No.

: SA48507

Elvitegravir, Impurities

Elvitegravir ELT-III

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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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CAS No.

: 949465-91-2

Mol F.

: C25H27ClFNO5

Mol W.

: 475.94

Cat No.

: SA48510

Elvitegravir, Impurities

Elvitegravir Hydroxy impurity

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CAS No.

: NA

Mol F.

: C16H14ClFO3

Mol W.

: 308.7

Cat No.

: SA48501

Elvitegravir, Impurities

Elvitegravir Leucinol Impurity

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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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CAS No.

: 1350172-03-0

Mol F.

: C24H25ClFNO5

Mol W.

: 461.9

Cat No.

: SA48517

Elvitegravir, Impurities, Nitrosamine

Elvitegravir Nitroso Amino Acrylate Impurity

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CAS No.

: NA

Mol F.

: C17H19BrF2N2O5

Mol W.

: 449.2

Cat No.

: SA48520

Elvitegravir, Impurities

Elvitegravir silyl (ELT-II) Impuritys

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CAS No.

: NA

Mol F.

: C28H35ClFNO5Si

Mol W.

: 548.1

Cat No.

: SA48518

Elvitegravir, Impurities

Elvitegravir Toluene Aduct Impurity

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CAS No.

: NA

Mol F.

: C19H18ClFO3

Mol W.

: 348.8

Cat No.

: SA48509

Empagliflozin, Impurities

Empagliflozin

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CAS No.

: 864070-44-0

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15103

Empagliflozin, Impurities

Empagliflozin (R-Isomer) Tetraacetate

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CAS No.

: 915095-98-6

Mol F.

: C31H35ClO11

Mol W.

: 619.1

Cat No.

: SA15160

Empagliflozin, Impurities

Empagliflozin 3,4-Diacetyl Impurity

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CAS No.

: NA

Mol F.

: C27H31ClO9

Mol W.

: 534.98

Cat No.

: SA15163

Empagliflozin, Impurities

Empagliflozin 3,4,6-Triacetyl Impurity

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CAS No.

: NA

Mol F.

: C29H33ClO10

Mol W.

: 577.02

Cat No.

: SA15164

Empagliflozin, Impurities

Empagliflozin Furanose Tetraacetate

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CAS No.

: NA

Mol F.

: C31H35ClO11

Mol W.

: 619.06

Cat No.

: SA15161

Empagliflozin, Impurities

Empagliflozin Phenolic Acid

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CAS No.

Mol F.

: C21H23ClO7

Mol W.

: 422.86

Cat No.

: SA15158

Empagliflozin, Impurities

Empagliflozin R-Isomer of alpha-Anomer

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CAS No.

: 2452301-42-5

Mol F.

: C23H27ClO7

Mol W.

: 450.91

Cat No.

: SA15130

Empagliflozin, Impurities

Empagliflozine Sulfonate Impurity

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CAS No.

: 2514922-33-7

Mol F.

: C10H12O4S

Mol W.

: 228.26

Cat No.

: SA15143

Empagliflozin, Impurities

Emplagliflozin Benzylic Hydroxy Impurity

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CAS No.

: 2137418-13-2

Mol F.

: C23H27ClO8

Mol W.

: 466.91

Cat No.

: SA15129

Empagliflozin, Impurities

Emplagliflozin Keto Impurity

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CAS No.

: 2125472-55-9

Mol F.

: C23H25ClO8

Mol W.

: 464.89

Cat No.

: SA15128

Emtricitabine, Impurities

Emtricitabine

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CAS No.

: 143491-57-0

Mol F.

: C₈H₁₀FN₃O₃S

Mol W.

: 247.25

Cat No.

: SA22905

Emtricitabine, Impurities

Emtricitabine 1,3-dioxolanyl Pyrimidinone Impurity

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CAS No.

: 145397-26-8

Mol F.

: C8H10FN3O4

Mol W.

: 231.2

Cat No.

: SA22937

Emtricitabine, Impurities

Emtricitabine Asymmetric Methylene Dimer | CAS : 1962114-96-0

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CAS No.

: 1962114-96-0

Mol F.

: C17H20F2N6O6S2

Mol W.

: 506.5

Cat No.

: SA22934

Emtricitabine, Impurities

Emtricitabine Desamino (R)-Sulfoxide Impurity

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CAS No.

: NA

Mol F.

: C8H9FN2O4S

Mol W.

: 248.2

Cat No.

: SA22935

Emtricitabine, Impurities

Emtricitabine Diastereomer (RS ISOMER )

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CAS No.

: 143491-54-7

Mol F.

: C8H10N3O3FS

Mol W.

: 247.25

Cat No.

: SA22928

Emtricitabine, Impurities

Emtricitabine Disulfide Impurity

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CAS No.

: 2331211-44-8

Mol F.

: C16H18F2N6O4S4

Mol W.

: 524.6

Cat No.

: SA22936

Emtricitabine, Impurities

Emtricitabine Methyl Ester Impurity

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CAS No.

: NA

Mol F.

: C9H10FN3O4S

Mol W.

: 275.26

Cat No.

: SA22933

Emtricitabine, Impurities

Emtricitabine N,N’-Methylene Dimer

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CAS No.

: 1962114-97-1

Mol F.

: C17H20F2N6O6S2

Mol W.

: 506.51

Cat No.

: SA22921

Emtricitabine, Impurities

Emtricitabine Uracil Impurity

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CAS No.

: 1422361-25-8

Mol F.

: C18H25FN2O5S

Mol W.

: 400.46

Cat No.

: SA22932

ENALAPRIL, Impurities

Enalapril 2-Chlorophenyl Impurity | CAS : 85918-76-9

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CAS No.

: 85918-76-9

Mol F.

: C20H27ClN2O5

Mol W.

: 410.9

Cat No.

: SA44001

ENALAPRIL, Impurities

Enalapril 4-Chlorophenyl Impurity

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CAS No.

: NA

Mol F.

: C20H27ClN2O5

Mol W.

: 410.89

Cat No.

: SA44002

ENALAPRIL, Impurities

Enalapril EP Impurity A

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CAS No.

: 76420-74-1

Mol F.

: C20H28N2O5

Mol W.

: 376.5

Cat No.

: SA44006

ENALAPRIL, Impurities

Enalapril EP Impurity D | CAS : 115729-52-7

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CAS No.

: 115729-52-7

Mol F.

: C20H26N2O4

Mol W.

: 358.4

Cat No.

: SA44004

ENALAPRIL, Impurities

Enalapril EP Impurity G

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CAS No.

: 460720-14-3

Mol F.

: C15H27NO4

Mol W.

: 285.4

Cat No.

: SA44005

ENALAPRIL, Impurities

Enalapril Impurity C | CAS : 76420-72-9

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CAS No.

: 76420-72-9

Mol F.

: C18H24N2O5

Mol W.

: 348.4

Cat No.

: SA44003

Impurities, Sitagliptin

Enamine Diamide Impurity

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CAS No.

Mol F.

: C18H15F6N5O2

Mol W.

: 447.33

Cat No.

: SA10425

Ensartinib, Impurities

Ensartinib

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CAS No.

: 1370651-20-9

Mol F.

: C26H27Cl2FN6O3

Mol W.

: 561.4

Cat No.

: SA53600

Ensartinib, Impurities

Ensartinib 4-Aminophenyl Piperazinyl Impurity

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CAS No.

: NA

Mol F.

: C13H19N3O

Mol W.

: 233.31

Cat No.

: SA53608

Ensartinib, Impurities

Ensartinib 4-Nitrophenyl Piperazinyl Impurity

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CAS No.

: 886025-85-0

Mol F.

: C13H17N3O3

Mol W.

: 263.29

Cat No.

: SA53609

Ensartinib, Impurities

Ensartinib Amino Pyridazine Impurity

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CAS No.

: 446273-59-2

Mol F.

: 208.44

Mol W.

: C4H3BrClN3

Cat No.

: SA53605

Ensartinib, Impurities

Ensartinib Benzoic Acid Impurity

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CAS No.

: NA

Mol F.

: C20H15Cl2FN4O4

Mol W.

: 465.3

Cat No.

: SA53604

Ensartinib, Impurities

Ensartinib Benzylic Alcohol Impurity

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CAS No.

: 330156-50-8

Mol F.

: C8H7Cl2FO

Mol W.

: 209.05

Cat No.

: SA53610

Ensartinib, Impurities

Ensartinib Chloro Pyridazine Impurity

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CAS No.

: 1370651-29-8

Mol F.

: C12H9Cl3FN3O

Mol W.

: 336.57

Cat No.

: SA53606

Ensartinib, Impurities

Ensartinib Desfluoro Impurity

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CAS No.

: NA

Mol F.

: C26H28Cl2N6O3

Mol W.

: 543.4

Cat No.

: SA53602