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Pharmaceutical Impurity Reference Standards

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

Naltrexone Impurity 34 structure

Naltrexone Impurity 34

CAS: 153567-11-4

In Stock97%+

Butylhydroxyanisole Impurity 6 structure

Butylhydroxyanisole Impurity 6

CAS: 15360-00-6

In Stock97%+

Estradiol Impurity N27 structure

Estradiol Impurity N27

CAS: 15375-21-0

In Stock97%+

Propofol Impurity 21 structure

Propofol Impurity 21

CAS: 153752-00-2

In Stock97%+

Lenalidomide Impurity 12 structure

Lenalidomide Impurity 12

CAS: 153754-31-5

In Stock97%+

Tadalafil Impurity 116 structure

Tadalafil Impurity 116

CAS: 154030-29-2

In Stock97%+

Sumatriptan Impurity B (Maleate) structure

Sumatriptan Impurity B (Maleate)

CAS: 154044-57-2

In Stock97%+

Dorzolamide EP Impurity D structure

Dorzolamide EP Impurity D

CAS: 154154-90-2

In Stock97%+

Cyproterone Acetate EP Impurity J structure

Cyproterone Acetate EP Impurity J

CAS: 15423-97-9

In Stock97%+

Betahistine impurity 02 HCl structure

Betahistine impurity 02 HCl

CAS: 15430-49-6

In Stock97%+

Ranitidine Impurity N1 structure

Ranitidine Impurity N1

CAS: 15433-79-1

In Stock97%+

4-((1-Methoxy-1-oxobutan-2-yl)amino)butanoic acid (Levetiracetam Impurity) structure

4-((1-Methoxy-1-oxobutan-2-yl)amino)butanoic acid (Levetiracetam Impurity)

CAS: 1543300-90-8

In Stock97%+

Prasugrel Impurity 4 structure

Prasugrel Impurity 4

CAS: 1544531-41-0

In Stock97%+

Neamine Hydrochloride structure

Neamine Hydrochloride

CAS: 15446-43-2

In Stock>90%

Fexofenadine Impurity 17 structure

Fexofenadine Impurity 17

CAS: 154477-55-1

In Stock97%+

Tofisopam Impurity 6 structure

Tofisopam Impurity 6

CAS: 15462-91-6

In Stock97%+

Dorzolamide Impurity 4 structure

Dorzolamide Impurity 4

CAS: 154802-22-9

In Stock97%+

Indobufen Impurity N5 structure

Indobufen Impurity N5

CAS: 15494-55-0

In Stock97%+

Fluorouracil Impurity 12 structure

Fluorouracil Impurity 12

CAS: 155-16-8

In Stock97%+

Pancuronium Bromide EP Impurity C (Pancuronium Bromide USP Related Compound A) structure

Pancuronium Bromide EP Impurity C (Pancuronium Bromide USP Related Compound A)

CAS: 15500-65-9

In Stock97%+

Tenofovir Impurity 115 structure

Tenofovir Impurity 115

CAS: 155102-96-8

In Stock97%+

Lansoprazole Impurity 10027-0322 structure

Lansoprazole Impurity 10027-0322

CAS: 1551185-85-3

In Stock97%+

Efinaconazole Impurity 47 HCl structure

Efinaconazole Impurity 47 HCl

CAS: 155137-09-0

In Stock97%+

Acetylcysteine Impurity 37 structure

Acetylcysteine Impurity 37

CAS: 155172-79-5

In Stock97%+

Gastrodin Impurity 4 structure

Gastrodin Impurity 4

CAS: 15519-73-0

In Stock97%+

Olaparib Impurity 64 structure

Olaparib Impurity 64

CAS: 155295-47-9

In Stock97%+

Tetrabenazine Impurity C1327 structure

Tetrabenazine Impurity C1327

CAS: 1556098-48-6

In Stock97%+

Lurasidone Impurity 46 structure

Lurasidone Impurity 46

CAS: 15573-40-7

In Stock97%+

Vitamin K1 Hydroperoxide Impurity 2 structure

Vitamin K1 Hydroperoxide Impurity 2

CAS: 23397-22-0

In Stock>95%

Naloxone Impurity 18 structure

Naloxone Impurity 18

CAS: 156047-22-2

In Stock97%+

Nortriptyline Impurity 21 structure

Nortriptyline Impurity 21

CAS: 1562-52-3

In Stock97%+

N4-(4-Fluorophenyl)-7-methoxyquinazoline-4,6-diamine (Dacomitinib Impurity) structure

N4-(4-Fluorophenyl)-7-methoxyquinazoline-4,6-diamine (Dacomitinib Impurity)

CAS: 1562180-31-7

In Stock97%+

Entecavir Impurity C66 structure

Entecavir Impurity C66

CAS: 156422-39-8

In Stock97%+

Fenfuram Impurity 18 structure

Fenfuram Impurity 18

CAS: 156546-86-0

In Stock97%+

Fesoterodine-O-Benzyl Acid Impurity structure

Fesoterodine-O-Benzyl Acid Impurity

CAS: 156755-33-8

In Stock97%+

Tolterodine Impurity N2 structure

Tolterodine Impurity N2

CAS: 156755-37-2

In Stock97%+

Thiamine Impurity N2 structure

Thiamine Impurity N2

CAS: 15678-01-0

In Stock97%+

Darunavir Impurity 47 structure

Darunavir Impurity 47

CAS: 156928-09-5

In Stock97%+

Bisfuranol Impurity 1 structure

Bisfuranol Impurity 1

CAS: 156928-10-8

In Stock97%+

Naproxen Sodium Impurity O structure

Naproxen Sodium Impurity O

CAS: 156967-24-7

In Stock97%+

Arginine Impurity 9（ L-Argininic Acid） structure

Arginine Impurity 9（ L-Argininic Acid）

CAS: 157-07-3

In Stock97%+

Sofosbuvir Impurity 87 structure

Sofosbuvir Impurity 87

CAS: 157037-56-4

In Stock97%+

Docetaxel Impurity 61 structure

Docetaxel Impurity 61

CAS: 157067-34-0

In Stock97%+

Trazodone EP Impurity C structure

Trazodone EP Impurity C

CAS: 157072-19-0

In Stock97%+

Alogliptin Impurity 52 structure

Alogliptin Impurity 52

CAS: 1573118-32-7

In Stock97%+

Cinchocaine EP Impurity B structure

Cinchocaine EP Impurity B

CAS: 15733-89-8

In Stock97%+

Imidaprilat Impurity 2 structure

Imidaprilat Impurity 2

CAS: 1573548-10-3

In Stock97%+

Pitolisant impurity 02 structure

Pitolisant impurity 02

CAS: 157355-75-4

In Stock97%+

Levofloxacin Impurity 26 structure

Levofloxacin Impurity 26

CAS: 157373-08-5

In Stock97%+

Thiamine - Impurity A (Chloride Salt) structure

Thiamine - Impurity A (Chloride Salt)

CAS: 15743-04-1

In Stock97%+

Azathioprine EP Impurity B structure

Azathioprine EP Impurity B

CAS: 157930-13-7

In Stock97%+

Carazolol Impurity 5 structure

Carazolol Impurity 5

CAS: 157989-11-2

In Stock97%+

Nitrendipine Impurity 10 structure

Nitrendipine Impurity 10

CAS: 15802-69-4

In Stock97%+

Sitagliptin Impurity 56 structure

Sitagliptin Impurity 56

CAS: 1582-05-4

In Stock97%+

Tamsulosin Impurity 27 HCl structure

Tamsulosin Impurity 27 HCl

CAS: 1582717-04-1

In Stock97%+

Adenosine Impurity 23 structure

Adenosine Impurity 23

CAS: 15830-61-2

In Stock97%+

BPOX Impurity 4 structure

BPOX Impurity 4

CAS: 15833-17-7

In Stock97%+

Agomelatine Impurity 63 structure

Agomelatine Impurity 63

CAS: 158365-53-8

In Stock97%+

Theophylline Impurity 27 structure

Theophylline Impurity 27

CAS: 15837-08-8

In Stock97%+

Prednisolone 20alpha-Hydroxy Impurity structure

Prednisolone 20alpha-Hydroxy Impurity

CAS: 15847-24-2

In Stock97%+

Ketobemidone impurity C (Y0000245) structure

Ketobemidone impurity C (Y0000245)

CAS: 15847-72-0

In Stock97%+

Metoprolol Impurity 17 structure

Metoprolol Impurity 17

CAS: 158553-31-2

In Stock97%+

Benzyl Alcohol Impurity I structure

Benzyl Alcohol Impurity I

CAS: 1586-00-1

In Stock97%+

Risperidone Impurity 9 structure

Risperidone Impurity 9

CAS: 158697-68-8

In Stock97%+

Sarpogrelate Impurity N1 structure

Sarpogrelate Impurity N1

CAS: 1588890-70-3

In Stock97%+

Anidulafungin Impurity 3 structure

Anidulafungin Impurity 3

CAS: 158938-08-0

In Stock97%+

Chlorhexidine Diacetate Impurity 4 structure

Chlorhexidine Diacetate Impurity 4

CAS: 15894-70-9

In Stock97%+

Paclitaxel EP Impurity R structure

Paclitaxel EP Impurity R

CAS: 158948-96-0

In Stock90%

Pethidine Impurity 3 structure

Pethidine Impurity 3

CAS: 158984-76-0

In Stock97%+

Xanomeline impurity N1 structure

Xanomeline impurity N1

CAS: 159059-10-6

In Stock97%+

Furfural Impurity 7 structure

Furfural Impurity 7

CAS: 159144-93-1

In Stock97%+

Pantoprazole Impurity 24 structure

Pantoprazole Impurity 24

CAS: 15931-25-6

In Stock97%+

Pravastatin EP Impurity C structure

Pravastatin EP Impurity C

CAS: 159345-66-1

In Stock97%+

Ambroxol Impurity 7 structure

Ambroxol Impurity 7

CAS: 15942-11-7

In Stock97%+

Olmesartan Impurity 13 structure

Olmesartan Impurity 13

CAS: 159532-62-4

In Stock97%+

Darifenacin 7-Bromoethyl Impurity structure

Darifenacin 7-Bromoethyl Impurity

CAS: 1598271-92-1

In Stock97%+

Abacavir Impurity N1 structure

Abacavir Impurity N1

CAS: 159832-22-1

In Stock97%+

Trastuzumab Impurity 2 (Fmoc-Val-Cit-PAB-OH) structure

Trastuzumab Impurity 2 (Fmoc-Val-Cit-PAB-OH)

CAS: 159858-22-7

In Stock97%+

Cycloserine Impurity N1 structure

Cycloserine Impurity N1

CAS: 15996-22-2

In Stock97%+

Flupirtine Impurity H structure

Flupirtine Impurity H

CAS: 16013-85-7

In Stock97%+

Vilazodone Impurity 42 structure

Vilazodone Impurity 42

CAS: 1602487-82-0

In Stock97%+

Progesterone Impurity 19 structure

Progesterone Impurity 19

CAS: 16031-66-6

In Stock97%+

Regadenoson Impurity 29 structure

Regadenoson Impurity 29

CAS: 16033-28-6

In Stock97%+

Micafungin WF11899A Impurity structure

Micafungin WF11899A Impurity

CAS: 160335-87-5

In Stock97%+

Mirogabalin Impurity N29 structure

Mirogabalin Impurity N29

CAS: 160424-29-3

In Stock97%+

Binimetinib Amide Impurity structure

Binimetinib Amide Impurity

CAS: 1604812-70-5

In Stock97%+

Nicorandil Impurity 29 structure

Nicorandil Impurity 29

CAS: 16051-48-2

In Stock97%+

Atropine Impurity 17 structure

Atropine Impurity 17

CAS: 16052-34-9

In Stock97%+

Zidovudine Impurity F structure

Zidovudine Impurity F

CAS: 16053-52-4

In Stock97%+

Topiroxostat Impurity 22 structure

Topiroxostat Impurity 22

CAS: 160601-84-3

In Stock97%+

Ziprasidone Impurity 12 structure

Ziprasidone Impurity 12

CAS: 1607828-43-2

In Stock97%+

Salmeterol Impurity 2 structure

Salmeterol Impurity 2

CAS: 160889-18-9

In Stock97%+

Metformin Impurity N74 structure

Metformin Impurity N74

CAS: 1609-00-3

In Stock97%+

Cimetidine Impurity 4 structure

Cimetidine Impurity 4

CAS: 1609-06-9

In Stock97%+

Diclofenac Dimer Impurity 2 structure

Diclofenac Dimer Impurity 2

CAS: 1609187-30-5

In Stock>95%

Tolfenamic Acid Impurity structure

Tolfenamic Acid Impurity

CAS: 1609192-68-8

In Stock97%+

Linezolid Impurity 29 structure

Linezolid Impurity 29

CAS: 1610690-08-8

In Stock97%+

Dabigatran Isopropyl Ester Impurity structure

Dabigatran Isopropyl Ester Impurity

CAS: 1610758-17-2

In Stock97%+

Empagliflozin Impurity 119 structure

Empagliflozin Impurity 119

CAS: 161168-87-2

In Stock97%+

Betamethasone Valerate EP Impurity F structure

Betamethasone Valerate EP Impurity F

CAS: 16125-28-3

In Stock97%+

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