Impurity Standards

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Atorvastatin Epoxy Tetrahydrofuran Impurity

Product Code:
DH /ATV /1032
Molecular Formula:
C26H24FNO5
CAS Number:
873950-19-7
Molecular Weight:
449.47
Synonyms: 4-(4-Fluorophenyl)-2,4-dihydroxy-2-(1-methylethyl)-N,5-diphenyl-3,6-dioxabicyclo[3.1.0]hexane-1-carboxamide


Atorvastatin Acetonide t-Butyl Ester Side Chain (4R,6S)-Isomer

Product Code:
DH /ATV/1026
Molecular Formula:
C14H23NO4
CAS Number:
196085-84-4
Molecular Weight:
269.34
Synonyms: Tert-butyl 2-((4R,6S)-6-(cyanomethyl)-2,2-dimethyl-1,3-dioxan-4-yl)acetate.


Atorvastatin Impurity Diepoxide

Product Code:
DH /ATV/1034
Molecular Formula:
C33H34FN2O7
CAS Number:
887470-43-1
Molecular Weight:
589.63
Synonyms: 7-[N-Phenyl-2-[4-(4-fluorophenyl]-6-methylethyl]-3,7-dioxa-5-azatricyclo [4.1.0.02,4]-4-[{phenylamino}


Atorvastatin Cyclic Fluorophenyl Impurity

Product Code:
DH / ATV/1033
Molecular Formula:
C33H34FN2NaO7
CAS Number:
1315629-79-8
Molecular Weight:
612.62
Synonyms: (3R)-4-(1b-(4-Fluorophenyl)-7-hydroxy-7- isopropyl-1a-phenyl-7a-(phenyl carbamoyl) hexahydro-1aH-oxireno[2',3':3,4]pyrrolo[2,1- b][1,3]oxazin-3-yl)-3-hydroxybutanoic acid sodium salt


Atorvastatin Cyclic Fluorophenyl Impurity

Product Code:
DH /ATV/1033
Molecular Formula:
C33H34FN2NaO7
CAS Number:
1315629-79-8
Molecular Weight:
612.62
Synonyms: (3R)-4-(1b-(4-Fluorophenyl)-7-hydroxy-7-isopropyl-1a-phenyl-7a-(phenyl carbamoyl) hexahydro-1aH-oxireno[2',3':3,4]pyrrolo[2,1-b][1,3]oxazin-3-yl)-3-hydroxybutanoic acid sodium salt.


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