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Pharmaceutical Impurity Reference Standards

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

Cefazedone Impurity 23 structure

Cefazedone Impurity 23

CAS: 64485-88-7

In Stock97%+

Cefazolin 3-Hydroxymethyl Impurity Sodium Salt structure

Cefazolin 3-Hydroxymethyl Impurity Sodium Salt

CAS: 50971-65-8

In Stock97%+

Cefazolin EP Impurity A Hydrochloride structure

Cefazolin EP Impurity A Hydrochloride

CAS: 98493-37-9

In Stock97%+

Cefazolin Impurity 36 structure

Cefazolin Impurity 36

CAS: 5456-21-3

In Stock97%+

Cefazolin Impurity 44 structure

Cefazolin Impurity 44

CAS: 20198-75-8

In Stock97%+

Cefepime EP Impurity D Sodium Salt structure

Cefepime EP Impurity D Sodium Salt

CAS: 78172-35-7

In Stock97%+

Cefepime EP Impurity G Hydrobromide Salt structure

Cefepime EP Impurity G Hydrobromide Salt

CAS: 51368-35-5

In Stock97%+

Cefepime EP Impurity G Sulfate structure

Cefepime EP Impurity G Sulfate

CAS: 684226-89-9

In Stock97%+

Cefepime Impurity 5 structure

Cefepime Impurity 5

CAS: 84994-24-1

In Stock97%+

Cefixime Impurity C17 structure

Cefixime Impurity C17

CAS: 84080-68-2

In Stock97%+

Cefixime Impurity 15 structure

Cefixime Impurity 15

CAS: 84080-70-6

In Stock97%+

Cefmenoxime Impurity 40 structure

Cefmenoxime Impurity 40

CAS: 21566-74-5

In Stock97%+

Cefradine Impurity C17 structure

Cefradine Impurity C17

CAS: 70287-30-8

In Stock97%+

Cefmetazole Impurity 21 structure

Cefmetazole Impurity 21

CAS: 52069-55-3

In Stock97%+

Cefmetazole sodium Impurity 12 structure

Cefmetazole sodium Impurity 12

CAS: 70953-19-4

In Stock97%+

Cefmetazole sodium Impurity 18 structure

Cefmetazole sodium Impurity 18

CAS: 56796-19-1

In Stock97%+

Cefmetazole sodium Impurity 20 structure

Cefmetazole sodium Impurity 20

CAS: 70953-18-3

In Stock97%+

Cefmetazole sodium Impurity 24 structure

Cefmetazole sodium Impurity 24

CAS: 53090-86-1

In Stock97%+

Cefmetazole sodium Impurity 25 structure

Cefmetazole sodium Impurity 25

CAS: 73707-53-6

In Stock97%+

Cefodizime Impurity 3 structure

Cefodizime Impurity 3

CAS: 24209-43-6

In Stock97%+

Cefonicid Impurity 1 structure

Cefonicid Impurity 1

CAS: 61270-71-1

In Stock97%+

Cefonicid Impurity 2 structure

Cefonicid Impurity 2

CAS: 67146-22-9

In Stock97%+

Cefoperazone EP Impurity E (HCl) structure

Cefoperazone EP Impurity E (HCl)

CAS: 57399-61-8

In Stock97%+

Cefotaxime Impurity 5 structure

Cefotaxime Impurity 5

CAS: 64485-89-8

In Stock97%+

Cefoxitin EP Impurity A Potassium Salt structure

Cefoxitin EP Impurity A Potassium Salt

CAS: 37051-16-4

In Stock97%+

Cefoxitin EP Impurity A Sodium Salt structure

Cefoxitin EP Impurity A Sodium Salt

CAS: 94089-00-6

In Stock97%+

Cefoxitin Impurity 20 structure

Cefoxitin Impurity 20

CAS: 34279-51-1

In Stock97%+

Cefpodoxime Proxetil Impurity 5 structure

Cefpodoxime Proxetil Impurity 5

CAS: 82619-01-0

In Stock97%+

Cefprozil EP Impurity B Hydrochloride structure

Cefprozil EP Impurity B Hydrochloride

CAS: 78144-01-1

In Stock97%+

Cefprozil EP Impurity B Sodium Salt structure

Cefprozil EP Impurity B Sodium Salt

CAS: 42284-83-3

In Stock97%+

Ceftaroline Fosamil Impurity 7 structure

Ceftaroline Fosamil Impurity 7

CAS: 229016-73-3

In Stock97%+

Ceftazidime Impurity 22 structure

Ceftazidime Impurity 22

CAS: 5408-04-8

In Stock97%+

Cefteram Pivoxil Impurity 3 structure

Cefteram Pivoxil Impurity 3

CAS: 98157-80-3

In Stock97%+

Ceftezole Impurity 12 structure

Ceftezole Impurity 12

CAS: 289-06-5

In Stock97%+

Ceftezole Impurity 18 structure

Ceftezole Impurity 18

CAS: 43194-95-2

In Stock97%+

Ceftezole Impurity 7 structure

Ceftezole Impurity 7

CAS: 41223-92-1

In Stock97%+

Ceftibuten Impurity 23 structure

Ceftibuten Impurity 23

CAS: 51762-51-7

In Stock97%+

Ceftibuten Impurity 9 structure

Ceftibuten Impurity 9

CAS: 97910-60-6

In Stock97%+

Ceftiofur Impurity N11 structure

Ceftiofur Impurity N11

CAS: 80370-59-8

In Stock>90%

Ceftizoxime Impurity 21 structure

Ceftizoxime Impurity 21

CAS: 36923-21-4

In Stock97%+

Ceftriaxone Impurity 4 structure

Ceftriaxone Impurity 4

CAS: 959246-33-4

In Stock97%+

Ceftriaxone Impurity Cefotaxime Triethylamine structure

Ceftriaxone Impurity Cefotaxime Triethylamine

CAS: 219827-56-2

In Stock97%+

Ceftriaxone Impurity MBT Potassium Salt structure

Ceftriaxone Impurity MBT Potassium Salt

CAS: 7778-70-3

In Stock97%+

Ceftriaxone Sodium - Impurity E (Sodium Salt) structure

Ceftriaxone Sodium - Impurity E (Sodium Salt)

CAS: 2227256-62-2

In Stock97%+

Cefuroxime EP Impurity I Sodium Salt structure

Cefuroxime EP Impurity I Sodium Salt

CAS: 65866-48-0

In Stock97%+

Cefuroxime Impurity 41 structure

Cefuroxime Impurity 41

CAS: 75884-38-7

In Stock97%+

Cefuroxime Impurity 58 structure

Cefuroxime Impurity 58

CAS: 54434-94-5

In Stock97%+

Celecoxib Impurity 1 structure

Celecoxib Impurity 1

CAS: 54779-81-6

In Stock97%+

Celecoxib Impurity 17 structure

Celecoxib Impurity 17

CAS: 75877-78-0

In Stock97%+

Celecoxib Impurity N3 structure

Celecoxib Impurity N3

CAS: 877-67-8

In Stock97%+

Celecoxib Impurity 27 structure

Celecoxib Impurity 27

CAS: 556-53-6

In Stock97%+

Celecoxib Impurity 28 structure

Celecoxib Impurity 28

CAS: 592-42-7

In Stock97%+

Celecoxib Impurity 29 structure

Celecoxib Impurity 29

CAS: 6147-66-6

In Stock97%+

Celecoxib Impurity 3 structure

Celecoxib Impurity 3

CAS: 53578-01-1

In Stock97%+

Celecoxib Impurity N4 structure

Celecoxib Impurity N4

CAS: 90829-71-3

In Stock97%+

Celecoxib Impurity 48 structure

Celecoxib Impurity 48

CAS: 515845-18-8

In Stock97%+

Celiprolol Hydrochloride EP Impurity A structure

Celiprolol Hydrochloride EP Impurity A

CAS: 56980-94-0

In Stock97%+

Celiprolol Hydrochloride EP Impurity C structure

Celiprolol Hydrochloride EP Impurity C

CAS: 57471-01-9

In Stock97%+

Celiprolol Hydrochloride EP Impurity F structure

Celiprolol Hydrochloride EP Impurity F

CAS: 79881-89-3

In Stock97%+

Celiprolol Hydrochloride EP Impurity H structure

Celiprolol Hydrochloride EP Impurity H

CAS: 85045-98-3

In Stock97%+

Cellobiose Impurity 2 structure

Cellobiose Impurity 2

CAS: 6380-97-8

In Stock97%+

Cephalosporin Impurity 11 (Cefovecin) structure

Cephalosporin Impurity 11 (Cefovecin)

CAS: 234096-34-5

In Stock97%+

Ceritinib Impurity 2 structure

Ceritinib Impurity 2

CAS: 861343-73-9

In Stock97%+

(R)-Cetirizine EP Impurity G DiHCl structure

(R)-Cetirizine EP Impurity G DiHCl

CAS: 728948-88-7

In Stock97%+

Cetirizine Impurity Y structure

Cetirizine Impurity Y

CAS: 34605-45-3

In Stock97%+

Chenodeoxycholic acid Impurity N3 structure

Chenodeoxycholic acid Impurity N3

CAS: 6818-44-6

In Stock>95%

Chiglitazar Sodium Impurity Ⅰ-1 structure

Chiglitazar Sodium Impurity Ⅰ-1

CAS: 56080-28-5

In Stock97%+

Chlorambucil EP Impurity A structure

Chlorambucil EP Impurity A

CAS: 27171-89-7

In Stock97%+

Chlorambucil EP Impurity D structure

Chlorambucil EP Impurity D

CAS: 94236-91-6

In Stock97%+

Chlorambucil Impurity 2 structure

Chlorambucil Impurity 2

CAS: 94086-78-9

In Stock97%+

Chloramphenicol Impurity 18 structure

Chloramphenicol Impurity 18

CAS: 40027-72-3

In Stock97%+

Chlorhexidine Dihydrochloride - Impurity E structure

Chlorhexidine Dihydrochloride - Impurity E

CAS: 61705-88-2

In Stock97%+

Chlormadinone Acetate EP Impurity I structure

Chlormadinone Acetate EP Impurity I

CAS: 4809-88-5

In Stock97%+

Chlormadinone Acetate EP Impurity L structure

Chlormadinone Acetate EP Impurity L

CAS: 2658-74-4

In Stock97%+

Chlormadinone Acetate EP Impurity I structure

Chlormadinone Acetate EP Impurity I

CAS: 4203-01-4

In Stock97%+

Chloroformic Acid Impurity 1 structure

Chloroformic Acid Impurity 1

CAS: 628-50-2

In Stock97%+

Chloroformic Acid Impurity 3 structure

Chloroformic Acid Impurity 3

CAS: 2050-94-4

In Stock97%+

Chloromezanone Impurity 2 structure

Chloromezanone Impurity 2

CAS: 5465-90-7

In Stock97%+

Chlorophyll Impurity 1 structure

Chlorophyll Impurity 1

CAS: 5594-30-9

In Stock97%+

Chlorophyll Impurity 3 structure

Chlorophyll Impurity 3

CAS: 25465-77-4

In Stock97%+

Chlorothalonil Impurity 4 structure

Chlorothalonil Impurity 4

CAS: 23039-03-4

In Stock97%+

Chlorothalonil Impurity 5 structure

Chlorothalonil Impurity 5

CAS: 19846-21-0

In Stock97%+

Chlorphenamine Impurity 19 structure

Chlorphenamine Impurity 19

CAS: 73486-85-8

In Stock97%+

Chlorphenamine Impurity 30 structure

Chlorphenamine Impurity 30

CAS: 71486-42-5

In Stock97%+

Chlorphenamine Impurity 31 structure

Chlorphenamine Impurity 31

CAS: 5005-36-7

In Stock97%+

Chlorphenamine Impurity 6 structure

Chlorphenamine Impurity 6

CAS: 20101-92-2

In Stock97%+

Chlorpromazine Impurity 7 structure

Chlorpromazine Impurity 7

CAS: 53929-74-1

In Stock97%+

Chlorpromazine Impurity 9 structure

Chlorpromazine Impurity 9

CAS: 65232-62-4

In Stock97%+

Chlorprothixene EP Impurity F HCl structure

Chlorprothixene EP Impurity F HCl

CAS: 2461-06-5；4546-35-4 (free base)

In Stock97%+

Chlorprothixene Hydrochloride - Impurity B structure

Chlorprothixene Hydrochloride - Impurity B

CAS: 2622-24-4

In Stock97%+

Chlorprothixene EP Impurity B HCl structure

Chlorprothixene EP Impurity B HCl

CAS: 4907-84-0

In Stock97%+

Chlorpyrifos Impurity 6 structure

Chlorpyrifos Impurity 6

CAS: 4486-44-6

In Stock97%+

Chlortalidone Impurity 6 structure

Chlortalidone Impurity 6

CAS: 68592-11-0

In Stock97%+

Chlortalidone Impurity 8 structure

Chlortalidone Impurity 8

CAS: 2224-77-3

In Stock97%+

Chlorthalidone Impurity N1 structure

Chlorthalidone Impurity N1

CAS: 5543-24-8

In Stock97%+

Chlortalidone Sulfochloro Impurity structure

Chlortalidone Sulfochloro Impurity

CAS: 68592-12-1

In Stock97%+

Chlortetracycline EP Impurity G structure

Chlortetracycline EP Impurity G

CAS: 769895-23-0

In Stock>95%

Chlortetracycline EP Impurity H structure

Chlortetracycline EP Impurity H

CAS: 7301-38-4

In Stock97%+

Cholesterol Impurity 12 structure

Cholesterol Impurity 12

CAS: 570-88-7

In Stock97%+

Cholesterol Impurity 13 structure

Cholesterol Impurity 13

CAS: 34310-88-8

In Stock97%+

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