Pharm-Rx Diphenhydramine Hydrochloride

Pharm-Rx Diphenhydramine Hydrochloride, containing the chemical compound diphenhydramine hydrochloride, serves over-the-counter (OTC) functions within pharmaceuticals and nutraceuticals. Classified as an active pharmaceutical ingredient (API) under pharmaceutical actives and precursors within pharmaceuticals and nutraceuticals, it is commonly used in various formulations due to its therapeutic properties.

Chemical Name: Diphenhydramine Hydrochloride

Chemical Inventories: AICS (Australia), DSL (Canada), EINECS (EU), ENCS (Japan), NZIoC (New Zealand), TCSI (Taiwan)

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

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    Enhanced TDS

    Identification & Functionality

    Pharma & Nutraceuticals Functions
    Molecular formula
    C₁₇H₂₁NO · HCl

    Diphenhydramine Hydrochloride contains not less than 98.0% and not more than 102.0% of diphenhydramine hydrochloride (C₁₇H₂₁NO · HCl), calculated on the dried basis.

    Chemical Structure

    Diphenhydramine Hydrochloride Chemical Structure - 1

    Applications & Uses


    Physical Form
    Typical Properties
    ValueUnitsTest Method / Conditions
    Molecular Weight291.82

    Regulatory & Compliance

    USP Reference Standards
    • USP Diphenhydramine Hydrochloride RS USP Diphenhydramine Related Compound A RS 2-(Diphenylmethoxy)-N-methylethanamine hydrochloride
    • C16H19NO · HCl 277.79