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Pharmaceutical Impurity Reference Standards

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

Pentamidine Impurity 2 structure

Pentamidine Impurity 2

CAS: 1252-44-4

In Stock97%+

Rivaroxaban Impurity N3 structure

Rivaroxaban Impurity N3

CAS: 1252018-10-2

In Stock97%+

Rivaroxaban Impurity N4 structure

Rivaroxaban Impurity N4

CAS: 1252018-21-5

In Stock97%+

Eletriptan impurity 01 structure

Eletriptan impurity 01

CAS: 1252673-29-2

In Stock97%+

Tizanidine Guanidine Impurity structure

Tizanidine Guanidine Impurity

CAS: 125292-37-7

In Stock97%+

Pefloxacin Impurity 9 structure

Pefloxacin Impurity 9

CAS: 125292-94-6

In Stock97%+

Pazopanib Impurity structure

Pazopanib Impurity

CAS: 1252927-45-9

In Stock97%+

Cholesterol Impurity 30 structure

Cholesterol Impurity 30

CAS: 1253-88-9

In Stock97%+

Verinurad Impurity 4 structure

Verinurad Impurity 4

CAS: 125305-75-1

In Stock97%+

Netarsudil Impurity 5 structure

Netarsudil Impurity 5

CAS: 1254032-67-1

In Stock97%+

Afatinib Impurity 57 structure

Afatinib Impurity 57

CAS: 1255078-56-8

In Stock97%+

Fingolimod Impurity 41 structure

Fingolimod Impurity 41

CAS: 125574-44-9

In Stock97%+

Celiprolol Hydrochloride EP Impurity B structure

Celiprolol Hydrochloride EP Impurity B

CAS: 125579-40-0

In Stock97%+

Fampridine Impurity 1 (Dalfampridine Impurity 1) structure

Fampridine Impurity 1 (Dalfampridine Impurity 1)

CAS: 125583-33-7

In Stock97%+

Ledipasvir Impurity-3 structure

Ledipasvir Impurity-3

CAS: 1256388-50-7

In Stock97%+

Remdesivir Impurity 25 structure

Remdesivir Impurity 25

CAS: 1256490-31-9

In Stock97%+

Sofosbuvir Impurity N40 structure

Sofosbuvir Impurity N40

CAS: 1256490-52-4

In Stock>95%

Alectinib Impurity N2 structure

Alectinib Impurity N2

CAS: 1256584-79-8

In Stock97%+

Alectinib impurity 01 structure

Alectinib impurity 01

CAS: 1256584-82-3

In Stock97%+

Terbinafine Impurity 4 structure

Terbinafine Impurity 4

CAS: 125660-64-2

In Stock97%+

Haloperidol pyridinium Chloride Impurity structure

Haloperidol pyridinium Chloride Impurity

CAS: 125785-69-5

In Stock97%+

Difenoconazole Impurity 1 structure

Difenoconazole Impurity 1

CAS: 1259033-72-1

In Stock97%+

Bortezomib Impurity 15 structure

Bortezomib Impurity 15

CAS: 1259365-04-2

In Stock97%+

Allopurinol EP Impurity D (USP RC D) structure

Allopurinol EP Impurity D (USP RC D)

CAS: 1260243-04-6

In Stock97%+

Minodronic Acid Impurity 3 structure

Minodronic Acid Impurity 3

CAS: 1260383-71-8

In Stock97%+

Amorolfine Hydrochloride - Impurity G structure

Amorolfine Hydrochloride - Impurity G

CAS: 1260498-34-7

In Stock97%+

Cephalexin Impurity 18 structure

Cephalexin Impurity 18

CAS: 1260607-12-2

In Stock97%+

Suvorexant Impurity 2 structure

Suvorexant Impurity 2

CAS: 1260619-38-2

In Stock97%+

Rabeprazole Impurity 23 structure

Rabeprazole Impurity 23

CAS: 1260859-24-2

In Stock97%+

Rivaroxaban Impurity 105 structure

Rivaroxaban Impurity 105

CAS: 1261222-08-5

In Stock97%+

Manidipine Impurity 1 Oxalate structure

Manidipine Impurity 1 Oxalate

CAS: 1261268-85-2

In Stock97%+

Cinacalcet Impurity 77 structure

Cinacalcet Impurity 77

CAS: 1261456-46-5

In Stock97%+

Bupropion Impurity 20 structure

Bupropion Impurity 20

CAS: 1261791-08-5

In Stock97%+

Norfloxacin Impurity 6 structure

Norfloxacin Impurity 6

CAS: 126192-88-9

In Stock97%+

Midostaurin Impurity 4 structure

Midostaurin Impurity 4

CAS: 126221-76-9

In Stock97%+

Stiripentol Impurity 2-d9 structure

Stiripentol Impurity 2-d9

CAS: 1262795-35-6

In Stock97%+

Ethyl Acetoacetate Impurity 2 structure

Ethyl Acetoacetate Impurity 2

CAS: 126290-87-7

In Stock97%+

Vemurafenib Impurity 1 structure

Vemurafenib Impurity 1

CAS: 1262985-23-8

In Stock97%+

Entecavir Impurity 7 structure

Entecavir Impurity 7

CAS: 1263274-06-1

In Stock97%+

Hydroxyzine Impurity B Hydrochloride salt structure

Hydroxyzine Impurity B Hydrochloride salt

CAS: 1263283-80-2

In Stock97%+

Trazodone EP Impurity D structure

Trazodone EP Impurity D

CAS: 1263358-13-9

In Stock97%+

Florfenicol Impurity 70 structure

Florfenicol Impurity 70

CAS: 126428-97-5

In Stock97%+

Acibenzolar Acid Impurity 1 structure

Acibenzolar Acid Impurity 1

CAS: 126448-41-7

In Stock97%+

Orbifloxacin EP Impurity D structure

Orbifloxacin EP Impurity D

CAS: 126458-22-8

In Stock97%+

Furfural Impurity 6 structure

Furfural Impurity 6

CAS: 1265365-41-0

In Stock97%+

Rivaroxaban Impurity 128 structure

Rivaroxaban Impurity 128

CAS: 1265682-11-8

In Stock97%+

Formoterol Impurity 28 structure

Formoterol Impurity 28

CAS: 126587-86-8

In Stock97%+

Famciclovir Impurity 8 structure

Famciclovir Impurity 8

CAS: 126589-69-3

In Stock97%+

Axitinib Impurity N25 structure

Axitinib Impurity N25

CAS: 1266386-30-4

In Stock97%+

Thalidomide Impurity 3 structure

Thalidomide Impurity 3

CAS: 126663-38-5

In Stock97%+

Ondansetron Impurity 16 structure

Ondansetron Impurity 16

CAS: 126671-72-5

In Stock97%+

Ondansetron Impurity 13 structure

Ondansetron Impurity 13

CAS: 126671-73-6

In Stock97%+

Ciprofloxacin Impurity 8 structure

Ciprofloxacin Impurity 8

CAS: 1267935-86-3

In Stock97%+

Oseltamivir impurity N1 structure

Oseltamivir impurity N1

CAS: 1268086-96-9

In Stock97%+

Ammuxetine Impurity 3 structure

Ammuxetine Impurity 3

CAS: 1268486-26-5

In Stock97%+

Calcipotriol Impurity A structure

Calcipotriol Impurity A

CAS: 126860-84-2

In Stock>90%

Efinaconazole Impurity 14 structure

Efinaconazole Impurity 14

CAS: 126918-16-9

In Stock97%+

Cyclophosphamide Impurity 13 structure

Cyclophosphamide Impurity 13

CAS: 127-88-8

In Stock97%+

Lifitegrast Impurity N77 structure

Lifitegrast Impurity N77

CAS: 1270132-45-0

In Stock97%+

Tolnaftate EP Impurity B structure

Tolnaftate EP Impurity B

CAS: 127084-74-6

In Stock97%+

Emtricitabine Impurity 12 Sodium salt structure

Emtricitabine Impurity 12 Sodium salt

CAS: 127087-58-5

In Stock97%+

Cinacalcet Impurity N26 structure

Cinacalcet Impurity N26

CAS: 1271930-12-1

In Stock97%+

Sitafloxacin Impurity 17 structure

Sitafloxacin Impurity 17

CAS: 127199-00-2

In Stock97%+

Sitafloxacin Impurity 23 structure

Sitafloxacin Impurity 23

CAS: 127199-15-9

In Stock97%+

Erlotinib Impurity 122 structure

Erlotinib Impurity 122

CAS: 1709-44-0

In Stock>95%

Remimazolam Impurity 1 structure

Remimazolam Impurity 1

CAS: 1275616-59-5

In Stock97%+

Flucloxacillin EP Impurity B (Mixture of Diastereomers) structure

Flucloxacillin EP Impurity B (Mixture of Diastereomers)

CAS: 1276016-89-7

In Stock97%+

rac Benzyl Phenylephrine-d3 (Phenylephrine Impurity D) structure

rac Benzyl Phenylephrine-d3 (Phenylephrine Impurity D)

CAS: 1276402-67-5

In Stock97%+

Ceftaroline Fosamil Impurity 1 structure

Ceftaroline Fosamil Impurity 1

CAS: 1277090-03-5

In Stock≥90%

Ceftaroline Fosamil Impurity C2 structure

Ceftaroline Fosamil Impurity C2

CAS: 1277090-04-6

In Stock97%+

Ceftolozane Impurity N1 structure

Ceftolozane Impurity N1

CAS: 127745-39-5

In Stock97%+

Erlotinib Impurity 180 structure

Erlotinib Impurity 180

CAS: 127791-53-1

In Stock97%+

Quinapril EP Impurity C-d5 structure

Quinapril EP Impurity C-d5

CAS: 1279034-23-9

In Stock97%+

Cefoperazone EP Impurity B (Sodium salt) structure

Cefoperazone EP Impurity B (Sodium salt)

CAS: 127923-94-8

In Stock97%+

Trametinib Impurity 12 structure

Trametinib Impurity 12

CAS: 1279693-89-8

In Stock97%+

Benzydamine Impurity D Hydrochloride structure

Benzydamine Impurity D Hydrochloride

CAS: 1281-00-1

In Stock97%+

128139-51-5 2,2'-((2-((Carboxymethyl)(2-((carboxymethyl)amino)-ethyl)amino)ethyl)azanediyl)diacetic acid 3476AD C12H21N3O8 structure

128139-51-5 2,2'-((2-((Carboxymethyl)(2-((carboxymethyl)amino)-ethyl)amino)ethyl)azanediyl)diacetic acid 3476AD C12H21N3O8

CAS: 128139-51-5

In Stock97%+

Bifendate Impurity N1 structure

Bifendate Impurity N1

CAS: 128142-41-6

In Stock97%+

Escitalopram EP Impurity K structure

Escitalopram EP Impurity K

CAS: 128196-02-1

In Stock97%+

Duocarmycin Impurity 1 structure

Duocarmycin Impurity 1

CAS: 128300-13-0

In Stock97%+

Cefdinir Impurity 2 structure

Cefdinir Impurity 2

CAS: 128438-01-7

In Stock97%+

Ospemifene 4-Hydroxy Impurity structure

Ospemifene 4-Hydroxy Impurity

CAS: 128585-01-3

In Stock97%+

Flavoxate EP Impurity C structure

Flavoxate EP Impurity C

CAS: 1286165-14-7

In Stock97%+

Ceftaroline Fosamil Impurity C45 structure

Ceftaroline Fosamil Impurity C45

CAS: 1286218-70-9

In Stock97%+

Famotidine Impurity 11 structure

Famotidine Impurity 11

CAS: 128648-99-7

In Stock97%+

Prasugrel Impurity P structure

Prasugrel Impurity P

CAS: 1287383-06-5

In Stock97%+

Moxifloxacin Impurity 27 structure

Moxifloxacin Impurity 27

CAS: 128740-18-1

In Stock97%+

Enzalutamide Impurity N2 structure

Enzalutamide Impurity N2

CAS: 1289942-66-0

In Stock97%+

Piribedil Impurity N3 structure

Piribedil Impurity N3

CAS: 129111-11-1

In Stock97%+

Mebendazole EP Impurity G structure

Mebendazole EP Impurity G

CAS: 129165-82-8

In Stock97%+

Ganirelix Impurity F structure

Ganirelix Impurity F

CAS: 129225-22-5

In Stock97%+

Atazanavir EP Impurity E structure

Atazanavir EP Impurity E

CAS: 1292296-09-3

In Stock97%+

Leuprorelin Impurity 14 structure

Leuprorelin Impurity 14

CAS: 129244-90-2

In Stock97%+

Cinacalcet Impurity N86 structure

Cinacalcet Impurity N86

CAS: 129254-76-8

In Stock97%+

Pibrentasvir Impurity 4 structure

Pibrentasvir Impurity 4

CAS: 1292836-20-4

In Stock97%+

Vortioxetine Impurity N1 structure

Vortioxetine Impurity N1

CAS: CATO-C1202544

In Stock97%+

Vortioxetine Impurity 1 structure

Vortioxetine Impurity 1

CAS: 1293342-91-2

In Stock97%+

Vortioxetine Impurity 6 structure

Vortioxetine Impurity 6

CAS: 1293342-97-8

In Stock97%+

Asenapine Impurity C95 structure

Asenapine Impurity C95

CAS: 129385-60-0

In Stock97%+

Tezacaftor Impurity C28 structure

Tezacaftor Impurity C28

CAS: 1294504-68-9

In Stock≥95%

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