Pharm-Rx Fexofenadine Hydrochloride

Pharm-Rx Fexofenadine Hydrochloride, known chemically as fexofenadine hydrochloride, is classified under active pharmaceutical ingredients (APIs) within pharmaceutical actives and precursors in pharmaceuticals and nutraceuticals technologies. This compound is a significant pharmaceutical ingredient commonly used in various formulations for its antihistamine properties.

Chemical Name: Fexofenadine Hydrochloride

CAS Number: 138452-21-8

Certifications & Compliance: California Proposition 65, FDA 29 CFR 1910.1200

Synonyms: Allegra

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    Enhanced TDS

    Identification & Functionality

    Molecular formula
    C₃₂H₃₉NO₄ · HCl

    Fexofenadine Hydrochloride contains not less than 98.0% and not more than 102.0% of fexofenadine hydrochloride (C₃₂H₃₉NO₄ · HCl), calculated on the anhydrous basis.

    Chemical Structure

    Fexofenadine Hydrochloride Chemical Structure - 1

    Applications & Uses


    Physical Form
    Typical Properties
    ValueUnitsTest Method / Conditions
    Molecular Weight537.70

    Regulatory & Compliance

    USP Reference Standards
    • USP Fexofenadine Hydrochloride RS USP Fexofenadine Related Compound A RS 2-(4-{4-[4-(Hydroxydiphenylmethyl)piperidin-1-yl] butanoyl}phenyl)-2-methylpropanoic acid; Also known as Benzeneacetic acid, 4-[1-oxy-4-[4- (hydroxydiphenylmethyl)-1-piperidinyl]butyl]-α,α- dimethyl
    • C32H37NO4 499.65 USP Fexofenadine Related Compound B RS 3-[1-Hydroxy-4-[4-(hydroxydiphenylmethyl)-1- piperidinyl]butyl]-α,α-dimethyl benzeneacetic acid hydrochloride monohydrate; Also known as 2-(3-{1-Hydroxy-4-[4- (hydroxydiphenylmethyl)piperidin-1-yl]butyl}phenyl)- 2-methylpropanoic acid hydrochloride monohydrate
    • (ERR 1-Feb-2021) C32H39NO4 · HCl · H2O 556.14 (ERR 1-Feb-2021)

    Packaging & Availability

    Labelling Information

    Where it is the hydrate form, the label so indicates. Change to read