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Carbocisteine

Also known as: S-Carboxymethyl-L-cysteine, Carbocysteine, S-Carboxymethylcysteine, 3-(Carboxymethylthio)-L-alanine, Mucodyne, Fluifort, Rhinathiol, Lisomucil, Thiodril, Transbronchin, L-Carbocisteine, EINECS 211-327-5, MFCD00002614

Carbocisteine (CAS 638-23-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C5H9NO4S and a molecular weight of 179.194 g/mol. Key properties include a melting point of 208-213 °C (dec.), a boiling point of 417.3±45.0 °C at 760 mmHg, a density of 1.5±0.1 g/cm3 and a flash point of 206.2±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
638-23-3
Jingsj CID
J-37877-8
Molecular Formula
C5H9NO4S
Molecular Weight
179.194 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point208-213 °C (dec.)
Boiling Point417.3±45.0 °C at 760 mmHg
Density1.5±0.1 g/cm3
Flash Point206.2±28.7 °C
Exact Mass179.025223
PSA125.92000
LogP0.32
Vapor Pressure0.0±2.1 mmHg at 25°C
Refractive Index1.588
Additional PropertySOLUBLE IN COLD WATER

Activity & Biological Data

Additional Information[1]. Paola Rogliani, et al. Efficacy and safety profile of mucolytic/antioxidant agents in chronic obstructive pulmonary disease: a comparative analysis across erdosteine, carbocysteine, and N-acetylcysteine. Respir Res. 2019 May 27;20(1):104.

Customs & Trade Information

HS Code2930909090
Summary2930909090. other organo-sulphur compounds. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Carbocisteine?

The CAS number of Carbocisteine is 638-23-3.

What are the molecular formula and molecular weight of Carbocisteine?

Carbocisteine has molecular formula C5H9NO4S and molecular weight 179.194 g/mol.

What are the upstream and downstream products of Carbocisteine?

For Carbocisteine, Upstream Products: L-Cysteine, Sodium chloroacetate, iodoacetic acid.

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

Last updated:

How to cite: Jingsj. "Carbocisteine (CAS 638-23-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37877-8 (accessed 2026-11-09).

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