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Pharmaceutical Impurity Reference Standards

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

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Capivasertib Impurity N1 structure

Capivasertib Impurity N1

CAS: 956460-96-1

In Stock97%+

Agomelatine Impurity 4 structure

Agomelatine Impurity 4

CAS: CATO-C3D-1362

In Stock97%+

Trelagliptin Impurity structure

Trelagliptin Impurity

CAS: CATO-C3D-1383

In Stock97%+

Penehyclidine Impurity 2 structure

Penehyclidine Impurity 2

CAS: CATO-C3D-1445

In Stock97%+

Penehyclidine Impurity 3 structure

Penehyclidine Impurity 3

CAS: 2091937-84-5

In Stock97%+

Palbociclib Impurity 7 structure

Palbociclib Impurity 7

CAS: CATO-C3D-1456

In Stock97%+

Palbociclib Impurity 10 structure

Palbociclib Impurity 10

CAS: CATO-C3D-1457

In Stock97%+

Palbociclib Impurity 15 structure

Palbociclib Impurity 15

CAS: CATO-C3D-1458

In Stock97%+

Trelagliptin Impurity structure

Trelagliptin Impurity

CAS: CATO-C3D-1460

In Stock97%+

Lapatinib 2-Fluoro Impurity structure

Lapatinib 2-Fluoro Impurity

CAS: 1393112-45-2

In Stock97%+

Palbociclib Impurity 20 structure

Palbociclib Impurity 20

CAS: CATO-C3D-1542

In Stock97%+

Isoniazid EP Impurity D structure

Isoniazid EP Impurity D

CAS: 553-53-7

In Stock>95%

Moxifloxacin impurity N1 structure

Moxifloxacin impurity N1

CAS: 147459-51-6

In Stock>95%

4'-((2-Butyl-4-oxo-1,3-diazaspiro[4.4]non-2-en-1-yl)methyl)-[1,1'-biphenyl]-2-carbonitrile structure

4'-((2-Butyl-4-oxo-1,3-diazaspiro[4.4]non-2-en-1-yl)methyl)-[1,1'-biphenyl]-2-carbonitrile

CAS: CATO-C3D-2418

In Stock97%+

Methylaminolevulinate EP Impurity B HCl structure

Methylaminolevulinate EP Impurity B HCl

CAS: 5451-09-2

In Stock>95%

Tolbutamide EP Impurity B structure

Tolbutamide EP Impurity B

CAS: 1694-06-0

In Stock>95%

Aristolochia lactam impurity 8 structure

Aristolochia lactam impurity 8

CAS: 112501-43-6

In Stock>95%

N-Nitroso Tryptophan EP Impurity H structure

N-Nitroso Tryptophan EP Impurity H

CAS: 24950-98-9

In Stock>95%

N1-Nitroso Tryptophan EP Impurity I structure

N1-Nitroso Tryptophan EP Impurity I

CAS: 23708-74-9

In Stock>95%

Molsidomine EP Impurity D structure

Molsidomine EP Impurity D

CAS: 4394-85-8

In Stock97%+

Ipconazole Impurity 1 structure

Ipconazole Impurity 1

CAS: 191166-47-9

In Stock97%+

Ipconazole Impurity 2 structure

Ipconazole Impurity 2

CAS: 115937-89-8

In Stock97%+

Ipconazole Impurity 3 structure

Ipconazole Impurity 3

CAS: 115850-69-6

In Stock97%+

Ipconazole Impurity 4 structure

Ipconazole Impurity 4

CAS: 191166-39-9

In Stock97%+

Florasulam impurity 50 structure

Florasulam impurity 50

CAS: CATO-C3D-26050

In Stock≥95%

Florasulam impurity 51 structure

Florasulam impurity 51

CAS: CATO-C3D-26051

In Stock≥95%

N-Nitroso-Tetracaine EP Impurity A structure

N-Nitroso-Tetracaine EP Impurity A

CAS: 91673-51-7

In Stock>95%

N-Nitroso Temazepam EP Impurity A structure

N-Nitroso Temazepam EP Impurity A

CAS: 51145-18-7

In Stock97%+

Procymidone Impurity 43 structure

Procymidone Impurity 43

CAS: 169327-83-7

In Stock97%+

Procymidone Impurity 44 structure

Procymidone Impurity 44

CAS: 2044706-66-1

In Stock97%+

Procymidone Impurity 45 structure

Procymidone Impurity 45

CAS: CATO-C3D-262345

In Stock97%+

Advantame Acid Impurity structure

Advantame Acid Impurity

CAS: CATO-C3D-262581

In Stock95%

(1R,2R,4R)-D-Camphor EP Impurity I structure

(1R,2R,4R)-D-Camphor EP Impurity I

CAS: 10334-13-1

In Stock97%+

Others Impurity 18 structure

Others Impurity 18

CAS: CATO-C3D-262618

In Stock97%+

Others Impurity 19 structure

Others Impurity 19

CAS: CATO-C3D-262619

In Stock97%+

Others Impurity 20 structure

Others Impurity 20

CAS: CATO-C3D-262620

In Stock97%+

Others Impurity 21 structure

Others Impurity 21

CAS: 17656-74-5

In Stock≥95%

PBT Impurity 58 structure

PBT Impurity 58

CAS: 210566-88-4

In Stock≥95%

SYH2051 Metabolite Impurity N67 structure

SYH2051 Metabolite Impurity N67

CAS: CATO-C3D-262667

In Stock97%+

Benzoyl 3-chlorobenzoyl peroxide structure

Benzoyl 3-chlorobenzoyl peroxide

CAS: 13495-28-8

In Stock97%+

Others Impurity 85 structure

Others Impurity 85

CAS: 731016-26-5

In Stock97%+

Promethazine EP Impurity C (R-Isomer) structure

Promethazine EP Impurity C (R-Isomer)

CAS: CATO-C3D-262692

In Stock95%

Pindolol EP Impurity E structure

Pindolol EP Impurity E

CAS: 2380-94-1

In Stock>95%

Others Impurity 86 structure

Others Impurity 86

CAS: CATO-C3D-262786

In Stock97%+

Ostarine(MK-2866)Impurity N1 structure

Ostarine(MK-2866)Impurity N1

CAS: CATO-C3D-262925

In Stock97%+

ATM Inhibitor N-Oxide Impurity 1 structure

ATM Inhibitor N-Oxide Impurity 1

CAS: CATO-C3D-262928

In Stock97%+

Fluchlorfenapyr Impurity 38 structure

Fluchlorfenapyr Impurity 38

CAS: 2129147-03-9

In Stock97%+

Cyantraniliprole Impurity A structure

Cyantraniliprole Impurity A

CAS: 736994-61-9

In Stock97%+

Cyantraniliprole Impurity B structure

Cyantraniliprole Impurity B

CAS: CATO-C3D-262951

In Stock97%+

Cyantraniliprole Impurity C structure

Cyantraniliprole Impurity C

CAS: CATO-C3D-262952

In Stock97%+

Cyantraniliprole Impurity IN-RYA13 structure

Cyantraniliprole Impurity IN-RYA13

CAS: 2957882-50-5

In Stock97%+

Cyantraniliprole Impurity IN-Q6S09 structure

Cyantraniliprole Impurity IN-Q6S09

CAS: CATO-C3D-262954

In Stock97%+

Others Impurity 262958 structure

Others Impurity 262958

CAS: CATO-C3D-262958

In Stock95%

New Drug Impurity 63 D5 structure

New Drug Impurity 63 D5

CAS: CATO-C3D-262963

In Stock97%+

Fosravuconazole Impurity 1 structure

Fosravuconazole Impurity 1

CAS: CATO-C3D-263000

In Stock97%+

Difenoconazole Impurity 2 structure

Difenoconazole Impurity 2

CAS: CATO-C3D-263028

In Stock97%+

Difenoconazole Impurity 3 structure

Difenoconazole Impurity 3

CAS: CATO-C3D-263029

In Stock97%+

Methyl (R)-4-Nitro-3-((oxiran-2-ylmethyl)amino)benzoate structure

Methyl (R)-4-Nitro-3-((oxiran-2-ylmethyl)amino)benzoate

CAS: CATO-C3D-263045

In Stock≥95%

Difelikefalin Preparation and Separation of Impurity 91 structure

Difelikefalin Preparation and Separation of Impurity 91

CAS: CATO-C3D-263091

In Stock97%+

Drometrizole Trisiloxane USP Related Compound D structure

Drometrizole Trisiloxane USP Related Compound D

CAS: 2514602-12-9

In Stock97%+

Polydatin Impurity 1 structure

Polydatin Impurity 1

CAS: 3009113-18-9

In Stock>95%

Others Impurity 263231 structure

Others Impurity 263231

CAS: CATO-C3D-263231

In Stock97%+

DA-302168S Impurity 1 structure

DA-302168S Impurity 1

CAS: CATO-C3D-263268

In Stock97%+

DA-302168S Impurity 2 structure

DA-302168S Impurity 2

CAS: CATO-C3D-263269

In Stock97%+

DA-302168S Impurity 3 structure

DA-302168S Impurity 3

CAS: CATO-C3D-263270

In Stock97%+

N-Acetyltyrosine EP Impurity B structure

N-Acetyltyrosine EP Impurity B

CAS: 17355-23-6

In Stock>95%

Oxytetracycline EP Impurity D structure

Oxytetracycline EP Impurity D

CAS: 18695-01-7

In Stock>90%

Spectinomycin EP Impurity A Dihydrochloride structure

Spectinomycin EP Impurity A Dihydrochloride

CAS: 52049-70-4

In Stock97%+

N-Nitroso Chlorcyclizine EP Impurity A structure

N-Nitroso Chlorcyclizine EP Impurity A

CAS: 16339-07-4

In Stock>90%

N-Nitroso Cyclophosphamide EP Impurity C structure

N-Nitroso Cyclophosphamide EP Impurity C

CAS: 67856-68-2

In Stock97%+

N-Nitroso Cyclizine EP Impurity A-d4 structure

N-Nitroso Cyclizine EP Impurity A-d4

CAS: 756524-88-6

In Stock>95%

Bacampicillin EP Impurity F structure

Bacampicillin EP Impurity F

CAS: 52-66-4

In Stock97%+

N-Nitroso Tropicamide EP Impurity A structure

N-Nitroso Tropicamide EP Impurity A

CAS: 13256-23-0

In Stock>95%

methyl 2,4,6-trimethoxybenzenesulfonate structure

methyl 2,4,6-trimethoxybenzenesulfonate

CAS: CATO-C3D-4662

In Stock>95%

Fludeoxyglucose(18F)EP Impurity D structure

Fludeoxyglucose(18F)EP Impurity D

CAS: 80965-30-6

In Stock97%+

Inosine Unknow impurity 4 structure

Inosine Unknow impurity 4

CAS: 2627-69-2

In Stock>95%

α-Ketoglutaric acid Dimer Impurity structure

α-Ketoglutaric acid Dimer Impurity

CAS: CATO-C3D-5782

In Stock>90%

N-Nitroso Tamsulosin Impurity (Mixture of Isomers) structure

N-Nitroso Tamsulosin Impurity (Mixture of Isomers)

CAS: CATO-C3D-5990

In Stock>90%

Sulindac EP Impurity D structure

Sulindac EP Impurity D

CAS: 134439-52-4

In Stock>95%

Cladribine EP Impurity A structure

Cladribine EP Impurity A

CAS: 4546-70-7

In Stock>95%

DTPA Impurity 1 structure

DTPA Impurity 1

CAS: 27825-74-7

In Stock97%+

Erythromycin EP Impurity B structure

Erythromycin EP Impurity B

CAS: 992-62-1

In Stock>90%

Erythromycin Impurity 10(Davercin) structure

Erythromycin Impurity 10(Davercin)

CAS: 55224-05-0

In Stock>85%

Erythromycin Impurity 12 structure

Erythromycin Impurity 12

CAS: CATO-C4X-100112

In Stock97%+

Erythromycin Impurity 13 structure

Erythromycin Impurity 13

CAS: 58781-38-7

In Stock>90%

Erythromycin EP Impurity H（Erythromycin A N-oxide） structure

Erythromycin EP Impurity H（Erythromycin A N-oxide）

CAS: 992-65-4

In Stock>90%

Erythromycin EP Impurity I（Erythralosamine） structure

Erythromycin EP Impurity I（Erythralosamine）

CAS: 546-57-6

In Stock>90%

Erythromycin EP Impurity E structure

Erythromycin EP Impurity E

CAS: 33396-29-1

In Stock>95%

Erythromycin EP Impurity J structure

Erythromycin EP Impurity J

CAS: 105900-46-7

In Stock>90%

Erythromycin Impurity 23 structure

Erythromycin Impurity 23

CAS: 226086-79-9

In Stock>90%

Erythromycin Impurity 26 structure

Erythromycin Impurity 26

CAS: 13483-18-6

In Stock>80%

Erythromycin EP Impurity D structure

Erythromycin EP Impurity D

CAS: 23893-13-2

In Stock>90%

Erythromycin Impurity 33 structure

Erythromycin Impurity 33

CAS: CATO-C4X-100133

In Stock97%+

Erythromycin EP Impurity L structure

Erythromycin EP Impurity L

CAS: 127955-44-6

In Stock>93%

Erythromycin Impurity 38 structure

Erythromycin Impurity 38

CAS: CATO-C4X-100138

In Stock97%+

Erythromycin Impurity 39 structure

Erythromycin Impurity 39

CAS: CATO-C4X-100139

In Stock97%+

Erythromycin Impurity 40 structure

Erythromycin Impurity 40

CAS: CATO-C4X-100140

In Stock>95%

Erythromycin Impurity 41 structure

Erythromycin Impurity 41

CAS: 33275-72-8

In Stock>95%

Erythromycin EP Impurity N structure

Erythromycin EP Impurity N

CAS: 3225-82-9

In Stock>90%

Erythromycin EP Impurity K structure

Erythromycin EP Impurity K

CAS: 33442-56-7

In Stock>90%

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