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Chlormezanone

Also known as: 2-(4-Chlorophenyl)-3-methyl-1,3-thiazinan-4-one 1,1-dioxide, 2-(p-Chlorophenyl)tetrahydro-3-methyl-4H-1,3-thiazin-4-one 1,1-dioxide, Fenarol, Trancopal, Lobak, Mio-Sed, Rexan, Rilansyl, Suprotran, Tanafol, Transanate

Chlormezanone (CAS 80-77-3) is a compound in the Ketones category listed in the Jingsj chemical database. It has the molecular formula C11H12ClNO3S and a molecular weight of 273.736 g/mol. Key properties include a melting point of 114ºC, a boiling point of 534.5±50.0 °C at 760 mmHg, a density of 1.4±0.1 g/cm3 and a flash point of 277.1±30.1 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
80-77-3
Jingsj CID
J-19539-7
Molecular Formula
C11H12ClNO3S
Molecular Weight
273.736 g/mol
Category
Ketones
Last updated
8/21/2026

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Physicochemical Properties

Melting Point114ºC
Boiling Point534.5±50.0 °C at 760 mmHg
Density1.4±0.1 g/cm3
Flash Point277.1±30.1 °C
Exact Mass273.022644
PSA62.83000
LogP0.86
Vapor Pressure0.0±1.4 mmHg at 25°C
Refractive Index1.580
Storage ConditionsStore at RT

Activity & Biological Data

TargetBenzodiazepine[1]
Additional Information[1]. Sukehiro CHIBA, et al. EFFECTS OF NEW s-TRIAZOLOBENZODIAZEPINE (D-4OTA) AND OTHER CENTRAL MUSCLE RELAXANTS ON SPINAL AND SUPRASPINAL REFLEXES IN CATS. Japan. J. Pharmacol, 23, 83-96 (1973).

Frequently Asked Questions

What is the CAS number of Chlormezanone?

The CAS number of Chlormezanone is 80-77-3.

What are the molecular formula and molecular weight of Chlormezanone?

Chlormezanone has molecular formula C11H12ClNO3S and molecular weight 273.736 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. "Chlormezanone (CAS 80-77-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-19539-7 (accessed 2026-11-06).

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