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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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Impurities, Linagliptin

Linagliptin Dimer impurity (N-C-C-C Dimer)

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CAS No.

: 2463617-49-2

Mol F.

: C51H56N16O4

Mol W.

: 957.1

Cat No.

: SA49908

Impurities, Linagliptin

Linagliptin Impurity 18

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CAS No.

: 1646355-34-1

Mol F.

: C22H23N7O2

Mol W.

: 417.5

Cat No.

: SA49920

Impurities, Linagliptin

Linagliptin Impurity 21

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CAS No.

: 666816-91-7

Mol F.

: C20H28N6O4

Mol W.

: 416.47

Cat No.

: SA49944

Impurities, Linagliptin

Linagliptin Impurity 32

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CAS No.

: 853029-57-9

Mol F.

: C20H17BrN6O2

Mol W.

: 453.29

Cat No.

: SA49943

Impurities, Linagliptin

Linagliptin Impurity 44

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CAS No.

: 1791405-13-4

Mol F.

: C15H20N6O2

Mol W.

: 316.36

Cat No.

: SA49945

Impurities, Linagliptin

Linagliptin Impurity 55

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CAS No.

: 2436762-89-7

Mol F.

: C14H13BrN4O2

Mol W.

: 349.18

Cat No.

: SA49947

Impurities, Linagliptin, Nitrosamine

Linagliptin Regio Isomer Di-Nitroso Impurity

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CAS No.

: NA

Mol F.

: C25H26N10O4

Mol W.

: 530.54

Cat No.

: SA49953

Impurities, Linezolid

Linezolid

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CAS No.

: 165800-03-3

Mol F.

: C16H20FN3O4

Mol W.

: 337.35

Cat No.

: SA17501

Impurities, Linezolid

Linezolid Benzyl Ester Impurity

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CAS No.

: 168828-81-7

Mol F.

: C18H19FN2O3

Mol W.

: 330.35

Cat No.

: SA17517

Impurities, Linezolid

Linezolid Dimer

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CAS No.

: 908143-04-4

Mol F.

: C₃₀H₃₅F₂N₅O₇

Mol W.

: 615.62

Cat No.

: SA17515

Impurities, Linezolid

Linezolid Dimer N-Benzyl Derivative

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CAS No.

: NA

Mol F.

: C35H39F2N5O6

Mol W.

: 663.7

Cat No.

: SA17535

Impurities, Linezolid

Linezolid Fluoromorpholino Oxazolidinyl Methylphthalamide

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CAS No.

: NA

Mol F.

: C23H25FN4O5

Mol W.

: 456.47

Cat No.

: SA17533

Impurities, Linezolid

Linezolid impurity -F

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CAS No.

Mol F.

: C15H18FN3O5

Mol W.

: 339.32

Cat No.

: SA17525

Impurities, Linezolid

Linezolid Impurity A

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CAS No.

Mol F.

: C14H16FN5O3

Mol W.

: 321.31

Cat No.

: SA17527

Impurities, Linezolid

Linezolid Impurity B

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CAS No.

Mol F.

: C16H20FN3O3S

Mol W.

: 353.41

Cat No.

: SA17528

Impurities, Linezolid

Linezolid Impurity D

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CAS No.

Mol F.

: C15H19FN2O6S

Mol W.

: 374.38

Cat No.

: SA17529

Impurities, Linezolid

Linezolid Impurity G

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CAS No.

: 1391068-25-9; 333753-69-8(free base)

Mol F.

: C15H23ClFN3O3

Mol W.

: 347.81

Cat No.

: SA17526

Impurities, Linezolid

Linezolid Impurity H

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CAS No.

Mol F.

: C15H22FN3O3

Mol W.

: 311.35

Cat No.

: SA17530

Impurities, Linezolid

Linezolid N-Benzyl Derivative | CAS : 1236077-61-4

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CAS No.

: 1236077-61-4

Mol F.

: C21H24FN3O3

Mol W.

: 385.4

Cat No.

: SA17534

Impurities, Lisinopril

Lisinopril

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CAS No.

: 83915-83-7(dihydrate);76547-98-3(anhydrous)

Mol F.

: C21H31N3O5

Mol W.

: 405.49

Cat No.

: SA35700

Impurities, Lisinopril

Lisinopril (R,S,S)-Isomer

$495.00 25 mg

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CAS No.

: 85955-59-5;1356019-70-9(sodiumsalt)

Mol F.

: C21H31N3O5

Mol W.

: 405.49

Cat No.

: SA35705

Impurities, Lisinopril

Lisinopril Des-Proline Impurity

$355.00 25 mg

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CAS No.

: 138247-43-5

Mol F.

: C16H24N2O4

Mol W.

: 308.37

Cat No.

: SA35708

Impurities, Lisinopril

Lisinopril Dimer

$1,550.00 25 mg

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CAS No.

: 1356839-89-8

Mol F.

: C42H60N6O9

Mol W.

: 792.96

Cat No.

: SA35707

Impurities, Lisinopril

Lisinopril EP Impurity A

$80.00 25 mg

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CAS No.

: 1012-05-1

Mol F.

: C10H13NO2

Mol W.

: 179.22

Cat No.

: SA35701

Impurities, Lisinopril

Lisinopril EP Impurity B

$80.00 25 mg

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CAS No.

: 6192-52-5

Mol F.

: C7H8O3S

Mol W.

: 172.2

Cat No.

: SA35702

Impurities, Lisinopril

Lisinopril EP Impurity I

$555.00 25 mg

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CAS No.

: 927819-64-5

Mol F.

: C31H41N3O7

Mol W.

: 567.67

Cat No.

: SA35709

Impurities, Lisinopril

Lisinopril Mono Methyester Impurity

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CAS No.

: NA

Mol F.

: C22H33N3O5

Mol W.

: 419.51

Cat No.

: SA35711

Impurities, Lisinopril

Lisinopril Pyrrolidine Methyl Ester Impurity

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CAS No.

: NA

Mol F.

: C22H33N3O5

Mol W.

: 419.51

Cat No.

: SA35710

Impurities, Loratadine

Loratadine

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CAS No.

: 79794-75-5

Mol F.

: C22H23ClN2O2

Mol W.

: 382.88

Cat No.

: SA34000

Impurities, Loratadine

Loratadine 2-Chloro Impurity

$395.00 25 mg

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CAS No.

: 165739-64-0

Mol F.

: C22H22Cl2N2O2

Mol W.

: 417.33

Cat No.

: SA34014

Impurities, Loratadine

Loratadine 3-Hydroxy Impurity

$395.00 25 mg

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CAS No.

: 183483-15-0

Mol F.

: C22H23ClN2O3

Mol W.

: 398.88

Cat No.

: SA34016

Impurities, Loratadine

Loratadine 4-Hydroxymethyl Impurity

$595.00 25 mg

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CAS No.

: 609806-40-8

Mol F.

: C23H25ClN2O3

Mol W.

: 412.91

Cat No.

: SA34017

Impurities, Loratadine

Loratadine 8-Dechloro-10-Chloro Impurity

$795.00 25 mg

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CAS No.

: 1346605-16-0

Mol F.

: C22H23ClN2O2

Mol W.

: 382.88

Cat No.

: SA34019

Impurities, Loratadine

Loratadine 8-Dechloro-7-Chloro Impurity

$995.00 25 mg

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CAS No.

: 1346602-19-4

Mol F.

: C22H23ClN2O2

Mol W.

: 382.88

Cat No.

: SA34020

Impurities, Loratadine

Loratadine Desethoxycarbonyl 3-Hydroxy Impurity

$555.00 25 mg

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CAS No.

: 119410-08-1

Mol F.

: C19H19ClN2O

Mol W.

: 326.82

Cat No.

: SA34023

Impurities, Loratadine

Loratadine EP Impurity E

$295.00 25 mg

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CAS No.

: 170727-59-0

Mol F.

: C22H23ClN2O2

Mol W.

: 382.88

Cat No.

: SA34005

Impurities, Loratadine

Loratadine Methanone Impurity

$395.00 25 mg

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CAS No.

: 119770-60-4; 130642-50-1

Mol F.

: C20H24Cl2N2O

Mol W.

: 379.32

Cat No.

: SA34024

Impurities, Loratadine

Loratadine N-Acetyl Impurity

$125.00 25 mg

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CAS No.

: 117796-52-8

Mol F.

: C21H21ClN2O

Mol W.

: 352.86

Cat No.

: SA34025

Impurities, Losartan

Losartan

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CAS No.

: 114798-26-4(base);124750-99-8(PotassiumSalt)

Mol F.

: C22H23ClN6O

Mol W.

: 422.91

Cat No.

: SA26700

Impurities, Losartan

Losartan Aldehyde N2-Trityl Impurity

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CAS No.

: 133910-00-6

Mol F.

: C41H35ClN6O

Mol W.

: 663.21

Cat No.

: SA26715

Impurities, Losartan

Losartan Carboxylic Acid

$255.00 25 mg

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CAS No.

: 124750-92-1

Mol F.

: C22H21ClN6O2

Mol W.

: 436.89

Cat No.

: SA26714

Impurities, Losartan

Losartan EP Impurity D

$95.00 25 mg

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CAS No.

: 83857-96-9

Mol F.

: C8H11ClN2O

Mol W.

: 186.64

Cat No.

: SA26704

Impurities, Losartan

Losartan EP Impurity E

$95.00 25 mg

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CAS No.

: 120568-11-8

Mol F.

: C14H12N4

Mol W.

: 236.27

Cat No.

: SA26705

Impurities, Losartan

Losartan EP Impurity G

$75.00 25 mg

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CAS No.

: 76-84-6

Mol F.

: C19H16O

Mol W.

: 260.33

Cat No.

: SA26707

Impurities, Losartan

Losartan EP Impurity H

$115.00 25 mg

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CAS No.

: 133909-99-6

Mol F.

: C41H37ClN6O

Mol W.

: 665.23

Cat No.

: SA26708

Impurities, Losartan

Losartan EP Impurity I

$395.00 25 mg

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CAS No.

: 1006062-28-7

Mol F.

: C41H37ClN6O

Mol W.

: 665.23

Cat No.

: SA26709

Impurities, Losartan

Losartan Imidazo[1,5-b]isoquinoline Impurity

$795.00 25 mg

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CAS No.

: 165276-38-0

Mol F.

: C22H21ClN6

Mol W.

: 404.9

Cat No.

: SA26721

Impurities, Losartan

Losartan Isomer N2-Trityl Impurity

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CAS No.

: 150098-04-7

Mol F.

: C41H37ClN6O

Mol W.

: 665.23

Cat No.

: SA26718

Impurities, Losartan

Losartan N,O-Ditrityl Impurity

$175.00 25 mg

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CAS No.

: 1796930-34-1

Mol F.

: C60H51ClN6O

Mol W.

: 907.54

Cat No.

: SA26719

Aspirin, Impurities

m-Salicylic Acid

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CAS No.

: 99-06-9

Mol F.

: C7H7NO3

Mol W.

: 153.14

Cat No.

: SA28509