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Dioxopromethazine Hydrochloride

Also known as: Dioxopromethazine Hydrochloride, Dioxopromethazine HCl, 10-(2-Dimethylaminopropyl)phenothiazine 5,5-dioxide hydrochloride, Promethazine 5,5-dioxide hydrochloride, Prothanon

Dioxopromethazine Hydrochloride (CAS 13754-56-8) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C17H20N2O2S and a molecular weight of 316.418 g/mol. Key properties include a melting point of 127-129ºC, a boiling point of 478.5±34.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 243.2±25.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
13754-56-8
Jingsj CID
J-2238-5
Molecular Formula
C17H20N2O2S
Molecular Weight
316.418 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point127-129ºC
Boiling Point478.5±34.0 °C at 760 mmHg
Density1.2±0.1 g/cm3
Flash Point243.2±25.7 °C
Exact Mass316.124542
PSA49.00000
LogP2.18
Vapor Pressure0.0±1.2 mmHg at 25°C
Refractive Index1.606

Activity & Biological Data

Additional Information[1]. Bartsch R, et al. Zur Pharmakologie des neuen Antihistaminicums 9.9-Dioxopromethazin (Prothanon) [Pharmacology of the new antihistaminic 9,9-dioxopromethazine (Prothanon)]. Pharmazie. 1970;25(2):91-96.

Frequently Asked Questions

What is the CAS number of Dioxopromethazine Hydrochloride?

The CAS number of Dioxopromethazine Hydrochloride is 13754-56-8.

What are the molecular formula and molecular weight of Dioxopromethazine Hydrochloride?

Dioxopromethazine Hydrochloride has molecular formula C17H20N2O2S and molecular weight 316.418 g/mol.

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

Last updated:

How to cite: Jingsj. "Dioxopromethazine Hydrochloride (CAS 13754-56-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-2238-5 (accessed 2026-11-06).

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