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Pharmaceutical Impurity Reference Standards

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

Afatinib Impurity 62 structure

Afatinib Impurity 62

CAS: 1056149-69-9

In Stock97%+

Fluticasone Impurity 4 structure

Fluticasone Impurity 4

CAS: 105638-31-1

In Stock97%+

Brexpiprazole Impurity 113 structure

Brexpiprazole Impurity 113

CAS: 105685-06-1

In Stock97%+

Acrivastine Impurity 2 structure

Acrivastine Impurity 2

CAS: 1057138-89-2

In Stock97%+

Nateglinide Impurity 2 structure

Nateglinide Impurity 2

CAS: 105746-38-1

In Stock97%+

Erlotinib Impurity 93 structure

Erlotinib Impurity 93

CAS: 1058132-82-3

In Stock97%+

Gadobutrol Impurity 79 structure

Gadobutrol Impurity 79

CAS: 105855-71-8

In Stock97%+

Arbidol Impurity 82 structure

Arbidol Impurity 82

CAS: 10588-31-5

In Stock97%+

Sitafloxacin Impurity 25 structure

Sitafloxacin Impurity 25

CAS: 105919-35-5

In Stock97%+

Adenosine Impurity 8 structure

Adenosine Impurity 8

CAS: 10596-22-2

In Stock97%+

Pramipexole Impurity 42 structure

Pramipexole Impurity 42

CAS: 106006-83-1

In Stock97%+

Fidaxomicin Impurity N1 structure

Fidaxomicin Impurity N1

CAS: 106008-69-9

In Stock>90%

Granisetron Impurity 27 structure

Granisetron Impurity 27

CAS: 10604-20-3

In Stock97%+

Tavaborole Impurity 1 structure

Tavaborole Impurity 1

CAS: 1061223-45-7

In Stock97%+

Fluphenazine EP Impurity E Fendizoic Acid structure

Fluphenazine EP Impurity E Fendizoic Acid

CAS: 106168-54-1

In Stock97%+

Stiripentol Impurity 3 structure

Stiripentol Impurity 3

CAS: 106174-98-5

In Stock97%+

Suvorexant Impurity 8 structure

Suvorexant Impurity 8

CAS: 1062320-24-4

In Stock97%+

Rufinamide Impurity 5 structure

Rufinamide Impurity 5

CAS: 106308-60-5

In Stock97%+

Penfluridol Impurity 14 structure

Penfluridol Impurity 14

CAS: 106392-60-3

In Stock97%+

Lenalidomide Impurity 42 structure

Lenalidomide Impurity 42

CAS: 1063995-49-2

In Stock97%+

Lenalidomide Impurity 37 structure

Lenalidomide Impurity 37

CAS: 1063995-54-9

In Stock97%+

SDZ-201106 Impurity 2 structure

SDZ-201106 Impurity 2

CAS: 106469-57-2

In Stock97%+

Diclofenac Impurity 8 structure

Diclofenac Impurity 8

CAS: 106610-60-0

In Stock97%+

Nisoldipine Impurity 4 structure

Nisoldipine Impurity 4

CAS: 106685-70-5

In Stock97%+

Olprinone Impurity N1 structure

Olprinone Impurity N1

CAS: 106730-70-5

In Stock97%+

Norfloxacin Impurity C70 structure

Norfloxacin Impurity C70

CAS: 106847-38-5

In Stock97%+

Norfloxacin Impurity C171 structure

Norfloxacin Impurity C171

CAS: 106847-39-6

In Stock97%+

Tetrabenazine Impurity C19 structure

Tetrabenazine Impurity C19

CAS: 1069-62-1

In Stock97%+

Lovastatin Impurity N1 structure

Lovastatin Impurity N1

CAS: 106909-04-0

In Stock97%+

Ropinirole EP Impurity D structure

Ropinirole EP Impurity D

CAS: 106916-16-9

In Stock97%+

Cilazapril EP Impurity D structure

Cilazapril EP Impurity D

CAS: 106928-09-0

In Stock97%+

Meldonium impurity C CRS structure

Meldonium impurity C CRS

CAS: 106966-25-0

In Stock97%+

Bensulide Impurity 3 structure

Bensulide Impurity 3

CAS: 107-56-2

In Stock97%+

Adefovir Dipivoxil Impurity 41 structure

Adefovir Dipivoxil Impurity 41

CAS: 107021-27-2

In Stock97%+

Etravirine Impurity N2 structure

Etravirine Impurity N2

CAS: 1070377-34-2

In Stock97%+

Trimetazidine EP Impurity A DiHCl structure

Trimetazidine EP Impurity A DiHCl

CAS: 107049-57-0

In Stock97%+

Proguanil EP Impurity G Hydrochloride structure

Proguanil EP Impurity G Hydrochloride

CAS: 1071546-52-5

In Stock97%+

Thiotepa Impurity 5 structure

Thiotepa Impurity 5

CAS: 1072-44-2

In Stock97%+

Isocarboxazid Impurity 1 structure

Isocarboxazid Impurity 1

CAS: 1072096-98-0

In Stock97%+

Cevimeline Thiol Impurity structure

Cevimeline Thiol Impurity

CAS: 107220-26-8

In Stock97%+

Loratadine Impurity 53 structure

Loratadine Impurity 53

CAS: 107285-30-3

In Stock97%+

Loratadine Impurity 28 structure

Loratadine Impurity 28

CAS: 1073332-71-4

In Stock97%+

Mianserin impurity 02 structure

Mianserin impurity 02

CAS: 1074-11-9

In Stock97%+

Adapalene Impurity 8 structure

Adapalene Impurity 8

CAS: 107430-57-9

In Stock97%+

Sertraline - Impurity C (Freebase) structure

Sertraline - Impurity C (Freebase)

CAS: 107538-91-0

In Stock97%+

Pyrroloquinoline Impurity 3 structure

Pyrroloquinoline Impurity 3

CAS: 107575-59-7

In Stock97%+

Anagrelide 5-Acetoxy Impurity structure

Anagrelide 5-Acetoxy Impurity

CAS: 1076198-71-4

In Stock97%+

Zopiclone Impurity 3 structure

Zopiclone Impurity 3

CAS: 1076199-62-6

In Stock97%+

Carvedilol Impurity 25 structure

Carvedilol Impurity 25

CAS: 1076199-79-5

In Stock97%+

Hydroxychloroquine Impurity 30 structure

Hydroxychloroquine Impurity 30

CAS: 1077-74-3

In Stock97%+

Zafirlukast Impurity 3 structure

Zafirlukast Impurity 3

CAS: 107754-14-3

In Stock97%+

Zafirlukast Nitroindole Genotoxic Impurity CRS structure

Zafirlukast Nitroindole Genotoxic Impurity CRS

CAS: 107754-15-4

In Stock97%+

Zafirlukast Methyl Ester Impurity structure

Zafirlukast Methyl Ester Impurity

CAS: 107754-19-8

In Stock97%+

Ambroxol EP Impurity D structure

Ambroxol EP Impurity D

CAS: 107814-37-9

In Stock97%+

Cinacalcet Impurity 104 structure

Cinacalcet Impurity 104

CAS: 1079988-51-4

In Stock97%+

Promethazine Impurity 5 structure

Promethazine Impurity 5

CAS: 108-14-5

In Stock97%+

Dopamine Impurity 3 structure

Dopamine Impurity 3

CAS: 108074-44-8

In Stock97%+

Levofloxacin Impurity 34 structure

Levofloxacin Impurity 34

CAS: 108224-82-4

In Stock97%+

Cefaclor Impurity C10 structure

Cefaclor Impurity C10

CAS: 108260-07-7

In Stock97%+

Cholic Acid Impurity N1 (3,7,22-Trihydroxyl-Cholanic Acid) structure

Cholic Acid Impurity N1 (3,7,22-Trihydroxyl-Cholanic Acid)

CAS: 108266-90-6

In Stock>95%

Perindopril Impurity N1 structure

Perindopril Impurity N1

CAS: 108507-42-2

In Stock97%+

Mizolastine Impurity N1 structure

Mizolastine Impurity N1

CAS: 108612-60-8

In Stock97%+

Rasagiline Impurity 43 structure

Rasagiline Impurity 43

CAS: 108701-34-4

In Stock97%+

Melphalan Impurity 14 structure

Melphalan Impurity 14

CAS: 1088-80-8

In Stock97%+

Aspartic Acid Impurity 1 structure

Aspartic Acid Impurity 1

CAS: 108867-30-7

In Stock97%+

Alimemazine EP Impurity B Hydrochloride structure

Alimemazine EP Impurity B Hydrochloride

CAS: 108883-87-0

In Stock97%+

Ticlopidine Impurity J structure

Ticlopidine Impurity J

CAS: 108896-78-2

In Stock97%+

Nefopam Impurity 3 structure

Nefopam Impurity 3

CAS: 108941-80-6

In Stock97%+

Tedizolid Impurity 5 structure

Tedizolid Impurity 5

CAS: 109-80-8

In Stock97%+

Levocetirizine Impurity 5 structure

Levocetirizine Impurity 5

CAS: 109036-15-9

In Stock97%+

Efinaconazole Impurity G structure

Efinaconazole Impurity G

CAS: 109105-86-4

In Stock97%+

Halofuginone Impurity 1 structure

Halofuginone Impurity 1

CAS: 1091605-42-3

In Stock97%+

Melatonin Impurity N1 structure

Melatonin Impurity N1

CAS: 109210-52-8

In Stock97%+

Quinine Impurity 1 structure

Quinine Impurity 1

CAS: 1092116-26-1

In Stock97%+

Ketoprofen Impurity 23 structure

Ketoprofen Impurity 23

CAS: 1092395-13-5

In Stock97%+

Ramelteon Impurity 20 structure

Ramelteon Impurity 20

CAS: 1092507-02-2

In Stock97%+

Ramelteon Impurity 21 structure

Ramelteon Impurity 21

CAS: 1092507-03-3

In Stock97%+

Simvastatin impurity 01 structure

Simvastatin impurity 01

CAS: 1092716-42-1

In Stock97%+

Darifenacin R-Isomer Impurity structure

Darifenacin R-Isomer Impurity

CAS: 1092800-15-1

In Stock97%+

Ruxolitinib Impurity N7 (Mixture of Diastereomers) structure

Ruxolitinib Impurity N7 (Mixture of Diastereomers)

CAS: 1092973-95-9

In Stock97%+

Atomoxetine impurity 01 structure

Atomoxetine impurity 01

CAS: 109306-10-7

In Stock97%+

Tirofiban Impurity 65 structure

Tirofiban Impurity 65

CAS: 109315-44-8

In Stock97%+

Bortezomib Impurity 36 structure

Bortezomib Impurity 36

CAS: 1093959-75-1

In Stock97%+

Budenoside Impurity 19 structure

Budenoside Impurity 19

CAS: 109423-03-2

In Stock97%+

Pregabalin Impurity 048 D-Tartrate structure

Pregabalin Impurity 048 D-Tartrate

CAS: 1094517-98-2

In Stock97%+

Budesonide Δ-6 Impurity structure

Budesonide Δ-6 Impurity

CAS: 109458-75-5

In Stock97%+

Etodolac EP Impurity C (Etodolac USP Related Compound A) structure

Etodolac EP Impurity C (Etodolac USP Related Compound A)

CAS: 109518-47-0

In Stock>95%

Fluralaner Impurity N1 structure

Fluralaner Impurity N1

CAS: 1095275-07-2

In Stock97%+

Fluralaner Impurity N2 structure

Fluralaner Impurity N2

CAS: 1095275-26-5

In Stock97%+

Cibenzoline Impurity (N-(2-aminoethyl-2,2-diphenyl Cyclopropanecarboxamide) structure

Cibenzoline Impurity (N-(2-aminoethyl-2,2-diphenyl Cyclopropanecarboxamide)

CAS: 109546-07-8

In Stock97%+

Levodropropizine Impurity 13 structure

Levodropropizine Impurity 13

CAS: 1095540-43-4

In Stock97%+

Loperamide EP Impurity G structure

Loperamide EP Impurity G

CAS: 109572-89-6

In Stock97%+

Remifentanil EP Impurity I structure

Remifentanil EP Impurity I

CAS: 1096-03-3

In Stock97%+

Silodosin Impurity 25 structure

Silodosin Impurity 25

CAS: 1096141-53-5

In Stock97%+

Metoprolol Impurity 23 structure

Metoprolol Impurity 23

CAS: 109632-11-3

In Stock97%+

Medroxyprogesterone Acetate Impurity 6 structure

Medroxyprogesterone Acetate Impurity 6

CAS: 1097-51-4

In Stock97%+

Flubendazole EP Impurity C structure

Flubendazole EP Impurity C

CAS: 1097107-40-8

In Stock97%+

Epalrestat Impurity 12 structure

Epalrestat Impurity 12

CAS: 109801-00-5

In Stock97%+

Tiagabine Impurity 5 (Stage I Impurity) structure

Tiagabine Impurity 5 (Stage I Impurity)

CAS: 109857-81-0

In Stock97%+

Sepiapterin Impurity 2 structure

Sepiapterin Impurity 2

CAS: 109901-94-2

In Stock97%+

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