Impurities

Nirmatrelvir Impurity 35

CAS Number

Nirmatrelvir Impurity B

CAS Number

2755812-81-6

Nirmatrelvir Methyl Ester

CAS Number

2879641-46-8

Nirmatrelvir Standard

CAS Number

2628280-40-8

Chemical Primary Standard

O-Desethyl Azilsartan

CAS Number

1442400-68-1

Azilsartan

O-Desmethyl Adapalene

CAS Number

125316-60-1

Adapalene

O-Desmethyl Guaifenesin

CAS Number

19826-87-0

Alternate CAS Number

Guaifenesin

o-Toluenesulfonamide

CAS Number

88-19-7

O4-Desmethyl O3-Desethyl Apremilast

CAS Number

1384439-79-5

Apremilast

Olanzapine embonate Monohydrate Standard

CAS Number

221373-18-8

Alternate CAS Number

132539-06-1(Freebase);783334-36-1(HCl Salt)

Olanzapine

Olanzapine Standard

CAS Number

132539-06-1

Alternate CAS Number

221373-18-8(Embonate Monohydrate Salt);783334-36-1(HCl Salt)

Olanzapine

Ondansetron Related Compound C

CAS Number

27387-31-1

Ondansetron

Orciprenaline Standard

CAS Number

586-06-1

Orciprenaline

Ornidazole Isomer

CAS Number

14419-11-5

Alternate CAS Number

Ornidazole

Orphenadrine Hydrochloride

CAS Number

341-69-5

Alternate CAS Number

341-69-5 (Citrate) , 83-98-7 (Free Base)

Orphenadrine

Osimertinib Acetyl Impurity

CAS Number

2227103-37-7

Osimertinib Amine Impurity

CAS Number

1421372-66-8

Osimertinib Impurity 9

CAS Number

1421373-36-5

Osimertinib Impurity A

CAS Number

1421373-98-9

Osimertinib Impurity G

CAS Number

2044702-39-6

Osimertinib Impurity J

CAS Number

1820891-36-8

Osimertinib-N-Desmethyl Impurity

CAS Number

1421373-99-0

Chemical Primary Standard

Oxacillin Standard

CAS Number

66-79-5

Oxacillin

Oxalic Acid

CAS Number

144-62-7

Alternate CAS Number

856335-90-5 (hydrate)

Apixaban

Oxalic acid

CAS Number

144-62-7

Oxazepam Standard

CAS Number

604-75-1

Oxazepam

Oxcarbazepine EP Impurity D

CAS Number

19579-83-0

Oxcarbazepine EP Impurity E

CAS Number

256-96-2

Oxcarbazepine EP Impurity M

CAS Number

2642430-32-6

Oxcarbazepine Impurity 2

CAS Number

4014-77-1

Chemical Primary Standard

Oxprenolol Standard

CAS Number

6452-71-7

Alternate CAS Number

6452-73-9(HCl Salt)

Oxprenolol

Ozanimod Alcohol Impurity

CAS Number

1201447-05-3

Ozanimod

Ozanimod R Isomer

CAS Number

1306760-86-0

Alternate CAS Number

1306760-85-9(HCl)

Ozanimod

Ozanimod Standard

CAS Number

1306760-87-1 (base)

Ozanimod

p-Chloroacetophenone

CAS Number

99-91-2

p-Tolyl disulfide

CAS Number

103-19-5

Vortioxetine

Paclitaxel Impurity-D

CAS Number

150547-36-7

Paclitaxel Impurity-E

CAS Number

105454-04-4

Paclitaxel Impurity-F

CAS Number

153083-53-5

Paclitaxel Impurity-H

CAS Number

78454-17-8

Paclitaxel Impurity-I

CAS Number

2157462-42-3

Paclitaxel Impurity-N

CAS Number

27548-93-2

Paclitaxel Impurity-O

CAS Number

219783-77-4