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Pharmaceutical Impurity Reference Standards

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

Atorvastatin Impurity N1 structure

Atorvastatin Impurity N1

CAS: 148127-12-2

In Stock97%+

Proguanil EP Impurity E structure

Proguanil EP Impurity E

CAS: 1482-62-8

In Stock97%+

Dapsone Impurity 16 structure

Dapsone Impurity 16

CAS: 148301-96-6

In Stock97%+

Icatibant Impurity 9 structure

Icatibant Impurity 9

CAS: 148416-85-7

In Stock97%+

Pitavastatin Impurity 18 structure

Pitavastatin Impurity 18

CAS: 148516-11-4

In Stock97%+

2-Aminoethyl nitrate hydrochloride structure

2-Aminoethyl nitrate hydrochloride

CAS: 148556-90-5

In Stock97%+

Bromhexine Impurity N1 structure

Bromhexine Impurity N1

CAS: 14860-48-1

In Stock97%+

Ranitidine EP Impurity G structure

Ranitidine EP Impurity G

CAS: 148639-72-9

In Stock97%+

Terconazole EP Impurity A structure

Terconazole EP Impurity A

CAS: 1486497-66-8

In Stock97%+

Eprosartan Impurity 3 structure

Eprosartan Impurity 3

CAS: 148674-34-4

In Stock97%+

Fulvestrant Impurity 37 structure

Fulvestrant Impurity 37

CAS: 148757-89-5

In Stock97%+

Ivabradine Iodo Impurity structure

Ivabradine Iodo Impurity

CAS: 148870-57-9

In Stock97%+

Amfetamine sulfate EP Impurity A structure

Amfetamine sulfate EP Impurity A

CAS: 14898-87-4

In Stock97%+

Alendronate EP Impurity C structure

Alendronate EP Impurity C

CAS: 14901-63-4

In Stock97%+

Gemfibrozil EP Impurity I structure

Gemfibrozil EP Impurity I

CAS: 149105-25-9

In Stock97%+

Tetrabenazine Impurity C82 structure

Tetrabenazine Impurity C82

CAS: 149183-89-1

In Stock97%+

Dorzolamide EP Impurity B（R,S-Isomer) structure

Dorzolamide EP Impurity B（R,S-Isomer)

CAS: 149249-72-9

In Stock97%+

Cefepime EP Impurity A structure

Cefepime EP Impurity A

CAS: 149261-27-8

In Stock97%+

Asciminib Impurity N1 structure

Asciminib Impurity N1

CAS: 1492952-73-4

In Stock97%+

Atazanavir Impurity 23 structure

Atazanavir Impurity 23

CAS: 149451-80-9

In Stock97%+

Tedizolid Impurity 33 structure

Tedizolid Impurity 33

CAS: 149524-42-5

In Stock97%+

Pregabalin Impurity 52 structure

Pregabalin Impurity 52

CAS: 1495844-28-4

In Stock97%+

Sofosbuvir Impurity 17 structure

Sofosbuvir Impurity 17

CAS: 1496551-71-3

In Stock>95%

Fosinopril Impurity 1 structure

Fosinopril Impurity 1

CAS: 149760-14-5

In Stock97%+

Sacubitril Impurity 55 structure

Sacubitril Impurity 55

CAS: 149818-98-4

In Stock97%+

Etoposide EP Impurity R structure

Etoposide EP Impurity R

CAS: 149839-65-6

In Stock97%+

Trandolapril EP Impurity D structure

Trandolapril EP Impurity D

CAS: 149881-40-3

In Stock97%+

Ledipasvir Impurity 8 structure

Ledipasvir Impurity 8

CAS: 1499193-65-5

In Stock97%+

Tigecycline Impurity 31 structure

Tigecycline Impurity 31

CAS: 149934-19-0

In Stock97%+

Lodoxamide Impurity N44 structure

Lodoxamide Impurity N44

CAS: 14994-02-6

In Stock97%+

2-Butyl-4-chloro-1H-imidazole-5-carboxylic acid structure

2-Butyl-4-chloro-1H-imidazole-5-carboxylic acid

CAS: 149968-28-5

In Stock97%+

Trifluoperazine Impurity 4 structure

Trifluoperazine Impurity 4

CAS: 150111-57-2

In Stock97%+

Trifluoperazine Impurity 5 structure

Trifluoperazine Impurity 5

CAS: 150111-58-3

In Stock97%+

Axitinib Impurity N26 structure

Axitinib Impurity N26

CAS: 150187-67-0

In Stock97%+

Entacapone Impurity N1 structure

Entacapone Impurity N1

CAS: 15029-36-4

In Stock97%+

Paliperidone Impurity 1 structure

Paliperidone Impurity 1

CAS: 150332-87-9

In Stock97%+

Metoprolol impurity 1 structure

Metoprolol impurity 1

CAS: 150332-88-0

In Stock97%+

Phenprocoumon Impurity 1 structure

Phenprocoumon Impurity 1

CAS: 15074-20-1

In Stock97%+

Nintedanib Impurity 27 structure

Nintedanib Impurity 27

CAS: 150784-50-2

In Stock97%+

Trimipramine Maleate EP Impurity G structure

Trimipramine Maleate EP Impurity G

CAS: 150802-55-4

In Stock97%+

Efinaconazole Impurity 18 structure

Efinaconazole Impurity 18

CAS: 150803-08-0

In Stock97%+

Roxadustat Impurity N5 structure

Roxadustat Impurity N5

CAS: 1509958-20-6

In Stock97%+

Simvastatin EP Impurity A Calcium Salt structure

Simvastatin EP Impurity A Calcium Salt

CAS: 151006-18-7

In Stock97%+

Mequitazine Impurity 4 structure

Mequitazine Impurity 4

CAS: 151129-13-4

In Stock97%+

Mequitazine Impurity 3 structure

Mequitazine Impurity 3

CAS: 151129-16-7

In Stock97%+

Bupivacaine Impurity 20 structure

Bupivacaine Impurity 20

CAS: 15116-13-9

In Stock97%+

Enalapril Impurity N1 structure

Enalapril Impurity N1

CAS: 17450-56-5

In Stock97%+

Moxifloxacin(R,R)-Nonane structure

Moxifloxacin(R,R)-Nonane

CAS: 151213-42-2

In Stock>90%

Flutamide EP impurity F structure

Flutamide EP impurity F

CAS: 151262-93-0

In Stock97%+

Mometasone Impurity C13 structure

Mometasone Impurity C13

CAS: 151265-36-0

In Stock97%+

Isomalt EP Impurity A structure

Isomalt EP Impurity A

CAS: 15132-06-6

In Stock97%+

Rimsulfuron Impurity 2 structure

Rimsulfuron Impurity 2

CAS: 151331-80-5

In Stock97%+

Oleanolic Acid Impurity 2 (3-O-p-Coumaroyloleanolic Acid) structure

Oleanolic Acid Impurity 2 (3-O-p-Coumaroyloleanolic Acid)

CAS: 151334-06-4

In Stock97%+

Carfilzomib Impurity 25 structure

Carfilzomib Impurity 25

CAS: 15136-32-0

In Stock97%+

Warfarin Impurity N2 structure

Warfarin Impurity N2

CAS: 15151-14-1

In Stock97%+

Dimetindene EP Impurity I structure

Dimetindene EP Impurity I

CAS: 151562-10-6

In Stock97%+

Atorvastatin EP Impurity A (Sodium salt) structure

Atorvastatin EP Impurity A (Sodium salt)

CAS: 1516864-05-3

In Stock97%+

Eszopiclone impurity 26 structure

Eszopiclone impurity 26

CAS: 151776-26-0

In Stock97%+

Malic Acid Impurity 4 structure

Malic Acid Impurity 4

CAS: 1518-61-2

In Stock97%+

Pyraclostrobin Impurity 4 structure

Pyraclostrobin Impurity 4

CAS: 151827-82-6

In Stock97%+

Testosterone Impurity N12 structure

Testosterone Impurity N12

CAS: 15183-38-7

In Stock97%+

Peramivir Impurity 37 structure

Peramivir Impurity 37

CAS: 151907-79-8

In Stock97%+

Peramivir Impurity 35 structure

Peramivir Impurity 35

CAS: 151907-80-1

In Stock97%+

Sofosbuvir Impurity 52 structure

Sofosbuvir Impurity 52

CAS: 1520010-86-9

In Stock97%+

Nifuratel Impurity 41 structure

Nifuratel Impurity 41

CAS: 15205-69-3

In Stock97%+

Memantine Impurity N2 structure

Memantine Impurity N2

CAS: 15210-64-7

In Stock97%+

Eprosartan Impurity 4 structure

Eprosartan Impurity 4

CAS: 152146-59-3

In Stock97%+

Zanamivir Impurity N structure

Zanamivir Impurity N

CAS: 152178-79-5

In Stock97%+

Peramivir Impurity 34 structure

Peramivir Impurity 34

CAS: 152279-17-9

In Stock97%+

(1S,3S,5S)-Saxagliptin Impurity N59 structure

(1S,3S,5S)-Saxagliptin Impurity N59

CAS: 1523541-80-1

In Stock>95%

Sertraline Impurity N1 structure

Sertraline Impurity N1

CAS: 152448-80-1

In Stock97%+

Cladribine Impurity N77 structure

Cladribine Impurity N77

CAS: 152463-97-3

In Stock97%+

Cladribine Impurity N78 structure

Cladribine Impurity N78

CAS: 152463-98-4

In Stock97%+

Amyrin Impurity 4 structure

Amyrin Impurity 4

CAS: 152487-61-1

In Stock97%+

Chlormadinone Acetate EP Impurity E structure

Chlormadinone Acetate EP Impurity E

CAS: 15251-04-4

In Stock97%+

Tramadol EP Impurity A structure

Tramadol EP Impurity A

CAS: 152538-36-8

In Stock97%+

Esomeprazole impurity 01 structure

Esomeprazole impurity 01

CAS: 1525433-40-2

In Stock97%+

Fluprednidene Acetate Impurity 1 structure

Fluprednidene Acetate Impurity 1

CAS: 1526-69-8

In Stock97%+

Sertraline oxime Impurity structure

Sertraline oxime Impurity

CAS: 152642-35-8

In Stock97%+

Omeprazole N1-Methyl 6-Methoxy Thiol Impurity structure

Omeprazole N1-Methyl 6-Methoxy Thiol Impurity

CAS: 1526768-06-8

In Stock97%+

Ertugliflozin impurity 01 structure

Ertugliflozin impurity 01

CAS: 1528636-39-6

In Stock97%+

Carfilzomib Impurity 71 structure

Carfilzomib Impurity 71

CAS: 1528769-14-3

In Stock97%+

Montelukast Impurity 21 structure

Montelukast Impurity 21

CAS: 152922-72-0

In Stock97%+

Cinacalcet Impurity 29 structure

Cinacalcet Impurity 29

CAS: 15297-33-3

In Stock97%+

Antioxidants Impurity 15 structure

Antioxidants Impurity 15

CAS: 1530-32-1

In Stock97%+

Abacavir 3-Hydroxy Impurity structure

Abacavir 3-Hydroxy Impurity

CAS: 153064-93-8

In Stock97%+

Dosulepin EP Impurity B structure

Dosulepin EP Impurity B

CAS: 1531-77-7

In Stock97%+

Dosulepin EP Impurity C structure

Dosulepin EP Impurity C

CAS: 1531-85-7

In Stock97%+

Levodropropizine EP Impurity B HBr structure

Levodropropizine EP Impurity B HBr

CAS: 153121-53-0

In Stock97%+

Faropenem Impurity 18 structure

Faropenem Impurity 18

CAS: 153165-72-1

In Stock97%+

Lesinurad Impurity 21 structure

Lesinurad Impurity 21

CAS: 1533519-84-4

In Stock97%+

Lesinurad Impurity 9 structure

Lesinurad Impurity 9

CAS: 1533519-85-5

In Stock97%+

Lesinurad Impurity 35 structure

Lesinurad Impurity 35

CAS: 1533519-86-6

In Stock97%+

Lesinurad Impurity 14 HCl structure

Lesinurad Impurity 14 HCl

CAS: 1533519-92-4

In Stock97%+

Lesinurad Impurity 33 structure

Lesinurad Impurity 33

CAS: 1533519-94-6

In Stock97%+

Lesinurad Impurity 3 structure

Lesinurad Impurity 3

CAS: 1533519-96-8

In Stock97%+

Lesinurad Impurity 4 structure

Lesinurad Impurity 4

CAS: 1533519-97-9

In Stock97%+

Lesinurad Impurity 31 structure

Lesinurad Impurity 31

CAS: 1533519-99-1

In Stock97%+

Ethopabate Impurity 2 structure

Ethopabate Impurity 2

CAS: 153462-13-6

In Stock97%+

Gadobutrol Impurity N1 structure

Gadobutrol Impurity N1

CAS: 15351-31-2

In Stock97%+

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