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Pharmaceutical Impurity Reference Standards

Process impurities, degradation products and genotoxic impurity reference standards with full characterization.

Clopidogrel Impurity 33 structure

Clopidogrel Impurity 33

CAS: 2418591-12-3

In Stock>95%

rac-Clopidogrel EP Impurity A structure

rac-Clopidogrel EP Impurity A

CAS: 90055-55-3

In Stock97%+

Clopidogrel Impurity 36 HCl structure

Clopidogrel Impurity 36 HCl

CAS: 1346605-15-9 (free base)

In Stock>95%

Clopidogrel Impurity 39 structure

Clopidogrel Impurity 39

CAS: 2418591-11-2

In Stock97%+

Clopidogrel EP impurity D structure

Clopidogrel EP impurity D

CAS: 1421283-60-4

In Stock>95%

Clopidogrel Sulfonated Impurity structure

Clopidogrel Sulfonated Impurity

CAS: 2173294-69-2

In Stock97%+

Clopidogrel EP Impurity E (R-Isomer) structure

Clopidogrel EP Impurity E (R-Isomer)

CAS: 444728-15-8

In Stock97%+

Clopidogrel Impurity 44 structure

Clopidogrel Impurity 44

CAS: CATO-C4X-102944

In Stock97%+

Clopidogrel Impurity 45 (Mixture of Diastereomers) structure

Clopidogrel Impurity 45 (Mixture of Diastereomers)

CAS: CATO-C4X-102945

In Stock97%+

Clopidogrel EP Impurity B HCl structure

Clopidogrel EP Impurity B HCl

CAS: 1396607-35-4

In Stock97%+

Clopidogrel Impurity 5 structure

Clopidogrel Impurity 5

CAS: CATO-C4X-10295

In Stock97%+

Clopidogrel Impurity 50 structure

Clopidogrel Impurity 50

CAS: CATO-C4X-102950

In Stock97%+

Clopidogrel Impurity 51 structure

Clopidogrel Impurity 51

CAS: 1430373-14-0

In Stock>95%

Clopidogrel Impurity 52 structure

Clopidogrel Impurity 52

CAS: 1430373-12-8

In Stock97%+

Clopidogrel Impurity 53 HCl structure

Clopidogrel Impurity 53 HCl

CAS: 1346231-35-3(free base)

In Stock>95%

Clopidogrel EP impurity B structure

Clopidogrel EP impurity B

CAS: 1396841-05-6

In Stock97%+

Clopidogrel Impurity 56 structure

Clopidogrel Impurity 56

CAS: 1346605-15-9

In Stock97%+

Clopidogrel Impurity 57 structure

Clopidogrel Impurity 57

CAS: CATO-C4X-102957

In Stock97%+

Clopidogrel Impurity 58 structure

Clopidogrel Impurity 58

CAS: CATO-C4X-102958

In Stock97%+

Clopidogrel Impurity 59 structure

Clopidogrel Impurity 59

CAS: 40412-09-7

In Stock>95%

Clopidogrel Impurity 6 structure

Clopidogrel Impurity 6

CAS: 1357474-92-0

In Stock97%+

Clopidogrel EP impurity B Sulfate structure

Clopidogrel EP impurity B Sulfate

CAS: 1396841-05-6(free base)

In Stock>95%

Clopidogrel EP Impurity E structure

Clopidogrel EP Impurity E

CAS: 90055-68-8

In Stock>95%

Clopidogrel Impurity 62 structure

Clopidogrel Impurity 62

CAS: CATO-C4X-102962

In Stock>95%

Clopidogrel Impurity 63 structure

Clopidogrel Impurity 63

CAS: CATO-C4X-102963

In Stock>95%

Clopidogrel Impurity 64 structure

Clopidogrel Impurity 64

CAS: CATO-C4X-102964

In Stock>95%

Clopidogrel Impurity 65 L-Tartrate structure

Clopidogrel Impurity 65 L-Tartrate

CAS: 141109-15-1

In Stock>95%

Clopidogrel Impurity 67 structure

Clopidogrel Impurity 67

CAS: 7292-71-9

In Stock97%+

Clopidogrel Impurity 68 structure

Clopidogrel Impurity 68

CAS: 6212-33-5

In Stock>95%

Clopidogrel Impurity 69 structure

Clopidogrel Impurity 69

CAS: 131202-62-5

In Stock97%+

Clopidogrel Thienopyridine Impurity structure

Clopidogrel Thienopyridine Impurity

CAS: 28783-41-7

In Stock>95%

Clopidogrel Impurity 70 structure

Clopidogrel Impurity 70

CAS: 13679-64-6

In Stock>95%

Clopidogrel Impurity 71 structure

Clopidogrel Impurity 71

CAS: 1346231-36-4

In Stock>95%

Clopidogrel Impurity 72 structure

Clopidogrel Impurity 72

CAS: CATO-C4X-102972

In Stock>95%

Clopidogrel Impurity 73 HCl structure

Clopidogrel Impurity 73 HCl

CAS: CATO-C4X-102973

In Stock>95%

Clopidogrel Impurity 74 structure

Clopidogrel Impurity 74

CAS: 1008008-56-7

In Stock>95%

Clopidogrel Impurity 75 structure

Clopidogrel Impurity 75

CAS: 1217999-35-3

In Stock>95%

Clopidogrel Impurity 76 structure

Clopidogrel Impurity 76

CAS: 1351586-91-8

In Stock>95%

Clopidogrel Impurity 77 structure

Clopidogrel Impurity 77

CAS: CATO-C4X-102977

In Stock97%+

Clopidogrel Impurity 78 structure

Clopidogrel Impurity 78

CAS: CATO-C4X-102978

In Stock97%+

Clopidogrel Impurity 79 structure

Clopidogrel Impurity 79

CAS: CATO-C4X-102979

In Stock97%+

Cilastatin EP Impurity D structure

Cilastatin EP Impurity D

CAS: 141-79-7

In Stock>90%

Clopidogrel Impurity 80 structure

Clopidogrel Impurity 80

CAS: 527687-26-9

In Stock97%+

Clopidogrel Impurity 81 structure

Clopidogrel Impurity 81

CAS: 1147350-75-1

In Stock97%+

Clopidogrel Impurity 82 structure

Clopidogrel Impurity 82

CAS: 1015247-87-6

In Stock>95%

Clopidogrel Impurity 83 structure

Clopidogrel Impurity 83

CAS: 2173294-65-8

In Stock97%+

Clopidogrel Impurity 84 structure

Clopidogrel Impurity 84

CAS: 782477-51-4

In Stock97%+

Clopidogrel Impurity 85 structure

Clopidogrel Impurity 85

CAS: 1219432-42-4

In Stock97%+

Clopidogrel Impurity 87 structure

Clopidogrel Impurity 87

CAS: 26118-14-9

In Stock97%+

Clopidogrel Impurity 88 structure

Clopidogrel Impurity 88

CAS: 34966-49-9

In Stock97%+

Clopidogrel Impurity 89 structure

Clopidogrel Impurity 89

CAS: CATO-C4X-102989

In Stock97%+

Clopidogrel Impurity 9 structure

Clopidogrel Impurity 9

CAS: 532987-11-4

In Stock97%+

Clopidogrel Impurity 90 structure

Clopidogrel Impurity 90

CAS: 1251736-86-3

In Stock>90%

Clopidogrel Impurity 91 structure

Clopidogrel Impurity 91

CAS: 317322-48-8

In Stock97%+

Clopidogrel Impurity 92 structure

Clopidogrel Impurity 92

CAS: CATO-C4X-102992

In Stock97%+

Clopidogrel EP impurity D Sulfate structure

Clopidogrel EP impurity D Sulfate

CAS: 1421283-60-4 (free base)

In Stock97%+

Clopidogrel Impurity 98 structure

Clopidogrel Impurity 98

CAS: 76103-96-3

In Stock97%+

Clopidogrel Impurity 985 structure

Clopidogrel Impurity 985

CAS: CATO-C4X-1029985

In Stock97%+

Clopidogrel Impurity 987 structure

Clopidogrel Impurity 987

CAS: CATO-C4X-1029987

In Stock97%+

Clopidogrel Impurity 99 structure

Clopidogrel Impurity 99

CAS: CATO-C4X-102999

In Stock>95%

Meptazinol Impurity 1 structure

Meptazinol Impurity 1

CAS: 774499-89-7

In Stock97%+

Meptazinol Impurity 2 structure

Meptazinol Impurity 2

CAS: CATO-C4X-10302

In Stock97%+

Meptazinol Impurity 3 structure

Meptazinol Impurity 3

CAS: CATO-C4X-10303

In Stock97%+

Meptazinol Impurity 4 structure

Meptazinol Impurity 4

CAS: CATO-C4X-10304

In Stock97%+

Montelukast EP Impurity A(Sodium Salt) structure

Montelukast EP Impurity A(Sodium Salt)

CAS: 190078-45-6

In Stock>90%

Montelukast Impurity 10 structure

Montelukast Impurity 10

CAS: 150026-75-8

In Stock97%+

Montelukast Impurity 12 structure

Montelukast Impurity 12

CAS: 807638-71-7

In Stock97%+

Montelukast EP Impurity B structure

Montelukast EP Impurity B

CAS: 918972-54-0

In Stock>95%

Montelukast EP Impurity D structure

Montelukast EP Impurity D

CAS: 1187586-61-3

In Stock>95%

Montelukast EP Impurity E structure

Montelukast EP Impurity E

CAS: 1187586-58-8

In Stock>90%

Montelukast EP Impurity H structure

Montelukast EP Impurity H

CAS: 851755-56-1

In Stock>95%

Montelukast EP Impurity I structure

Montelukast EP Impurity I

CAS: 2045402-27-3

In Stock>95%

Montelukast Impurity 19 structure

Montelukast Impurity 19

CAS: 1258428-71-5

In Stock>95%

Montelukast Impurity 2 structure

Montelukast Impurity 2

CAS: CATO-C4X-10312

In Stock97%+

Montelukast Impurity 21 structure

Montelukast Impurity 21

CAS: 142147-67-9

In Stock97%+

Montelukast Impurity 22 structure

Montelukast Impurity 22

CAS: 1266620-74-9

In Stock97%+

Montelukast Impurity 23 structure

Montelukast Impurity 23

CAS: CATO-C4X-103123

In Stock97%+

Montelukast Impurity 24 structure

Montelukast Impurity 24

CAS: CATO-C4X-103124

In Stock97%+

Montelukast EP Impurity A structure

Montelukast EP Impurity A

CAS: 220927-27-5

In Stock>95%

Montelukast Impurity 26 structure

Montelukast Impurity 26

CAS: 120578-03-2

In Stock>95%

Montelukast Impurity 27 structure

Montelukast Impurity 27

CAS: 168214-67-3

In Stock>95%

Montelukast Impurity 29 structure

Montelukast Impurity 29

CAS: 184764-13-4

In Stock>95%

Montelukast EP Impurity C(Mixture of Diastereomers) structure

Montelukast EP Impurity C(Mixture of Diastereomers)

CAS: 909849-96-3

In Stock>90%

Montelukast Impurity 30 structure

Montelukast Impurity 30

CAS: 855473-51-7

In Stock97%+

Montelukast Impurity 31 structure

Montelukast Impurity 31

CAS: 287930-77-2

In Stock97%+

Montelukast Impurity 32 structure

Montelukast Impurity 32

CAS: 1187586-63-5

In Stock>95%

Montelukast EP Impurity H structure

Montelukast EP Impurity H

CAS: 906107-37-7

In Stock97%+

Montelukast Impurity 34 structure

Montelukast Impurity 34

CAS: 162515-68-6

In Stock>95%

Montelukast Impurity 35 structure

Montelukast Impurity 35

CAS: 1351973-25-5

In Stock>95%

Montelukast Impurity 36 structure

Montelukast Impurity 36

CAS: 142569-69-5

In Stock>95%

Montelukast Impurity 37 structure

Montelukast Impurity 37

CAS: CATO-C4X-103137

In Stock>95%

Montelukast Impurity 39 structure

Montelukast Impurity 39

CAS: 769-28-8

In Stock97%+

Montelukast EP Impurity D Isomer structure

Montelukast EP Impurity D Isomer

CAS: CATO-C4X-10314

In Stock97%+

Montelukast Impurity 40 structure

Montelukast Impurity 40

CAS: CATO-C4X-103140

In Stock>95%

Montelukast Impurity 42 structure

Montelukast Impurity 42

CAS: 149968-10-5

In Stock>95%

Montelukast Impurity 43 structure

Montelukast Impurity 43

CAS: 2365398-67-8

In Stock97%+

Montelukast Impurity 44 structure

Montelukast Impurity 44

CAS: 2365398-66-7

In Stock97%+

Montelukast Sodium EP Impurity G structure

Montelukast Sodium EP Impurity G

CAS: 1428448-96-7

In Stock>95%

Montelukast Impurity 46 structure

Montelukast Impurity 46

CAS: CATO-C4X-103146

In Stock97%+

Montelukast Impurity 47 structure

Montelukast Impurity 47

CAS: 1079753-36-8

In Stock97%+

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