Fexofenadine hydrochloride intermediate

[Chemical Name]: 2-[4-[4-[4-(Hydroxydiphenylmethyl)-1-piperidinyl]-1-oxobutyl]phenyl]-2,2-dimethylacetic acid methyl ester

[Synonyms]: Methyl4-[4-[4-(hydroxydiphenylmethyl)-1-piperidinyl]-1-oxobutyl]-a,a-dimethylbenzeneacetate

[Structure]:

[Formula]: C33H39NO4

[Molecular Weight]: 513.67

[CAS RN]: 154477-55-1

[Density]: 1.132 g/cm3

[Specification]:

Appearance White to off-white crystalline powder
Water 4.0%max
m-Isomer 1.5%max
Assay 95.0%min