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Terfenadine EP Impurity B

Product Code:

TFD/1002

CAS Number:

1632048-95-3

Molecular Formula:

C32H41NO

Molecular Weight:

455.67
Synonyms : (1RS)-1-[4-(1,1-Dimethylethyl)phenyl]-4-[4-(diphenylmethyl)piperidin-1-yl]butan-1-ol.

Terfenadine EP Impurity C

Product Code:

TFD/1003

CAS Number:

634901-83-0

Molecular Formula:

C32H41NO3

Molecular Weight:

487.67
Synonyms : 1-[(4RS)-4-[4-(1,1-Dimethylethyl)phenyl]-4-hydroxybutyl]-4-(hydroxydiphenyl methyl)piperidine 1-oxide.

Terfenadine EP Impurity D

Product Code:

TFD/1004

CAS Number:

93052-68-7

Molecular Formula:

C32H39NO

Molecular Weight:

453.67
Synonyms : (1RS)-1-[4-(1,1-Dimethylethyl)phenyl]-4-[4-(diphenylmethylene)piperidin-1-yl]butan-1-ol.