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Methyldiphenhydramine hydrochloride

Also known as: 2-[(p-methyl-alpha-phenylbenzyl)oxy]ethyl(dimethyl)ammonium chloride, Toladryl, Neobenodine, Dimethyl-[2-[(4-methylphenyl)-phenylmethoxy]ethyl]azanium chloride, Diphenhydramine EP Impurity B (hydrochloride)

Methyldiphenhydramine hydrochloride (CAS 4024-34-4) is a compound in the Solvents category listed in the Jingsj chemical database. It has the molecular formula C18H24ClNO and a molecular weight of 305.84200 g/mol. Key properties include a boiling point of 362.5ºC at 760mmHg and a flash point of 107ºC. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
4024-34-4
Jingsj CID
J-1092322-9
Molecular Formula
C18H24ClNO
Molecular Weight
305.84200 g/mol
Category
Solvents
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point362.5ºC at 760mmHg
Flash Point107ºC
Exact Mass305.15500
PSA12.47000
LogP4.46460

GHS Safety & Compliance

IrritantSignal word: Warning
  • H302 — Harmful if swallowed

Frequently Asked Questions

What is the CAS number of Methyldiphenhydramine hydrochloride?

The CAS number of Methyldiphenhydramine hydrochloride is 4024-34-4.

What are the molecular formula and molecular weight of Methyldiphenhydramine hydrochloride?

Methyldiphenhydramine hydrochloride has molecular formula C18H24ClNO and molecular weight 305.84200 g/mol.

Is Methyldiphenhydramine hydrochloride hazardous?

Methyldiphenhydramine hydrochloride has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.

What are the upstream and downstream products of Methyldiphenhydramine hydrochloride?

For Methyldiphenhydramine hydrochloride, Upstream Products: 4-Methylbenzhydrol, 2-Dimethylaminoethyl chloride hydrochloride.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Methyldiphenhydramine hydrochloride (CAS 4024-34-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1092322-9 (accessed 2026-11-06).

Data for reference only; verify product details with suppliers before purchase.