L-Cysteine methyl ester hydrochloride
L-半胱氨酸甲酯盐酸盐
Also known as: Methyl cysteine hydrochloride, H-Cys-OMe·HCl, L-Cys-OMe·HCl, Mecysteine hydrochloride, Methyl L-cysteinate hydrochloride, Cysteine methyl ester hydrochloride, Acdrile, Actiol
L-Cysteine methyl ester hydrochloride (CAS 18598-63-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H10ClNO2S and a molecular weight of 171.646 g/mol. It is also known as Methyl cysteine hydrochloride, H-Cys-OMe·HCl and L-Cys-OMe·HCl. Key properties include a melting point of 142 °C (dec.)(lit.), a boiling point of 197.2ºC at 760 mmHg and a flash point of 73.1ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 18598-63-5
- Jingsj CID
- J-14365-9
- Molecular Formula
- C4H10ClNO2S
- Chinese Name
- L-半胱氨酸甲酯盐酸盐
- Molecular Weight
- 171.646 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 142 °C (dec.)(lit.) |
|---|---|
| Boiling Point | 197.2ºC at 760 mmHg |
| Flash Point | 73.1ºC |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of L-Cysteine methyl ester hydrochloride?
The CAS number of L-Cysteine methyl ester hydrochloride is 18598-63-5.
What are the molecular formula and molecular weight of L-Cysteine methyl ester hydrochloride?
L-Cysteine methyl ester hydrochloride has molecular formula C4H10ClNO2S and molecular weight 171.646 g/mol.
Is L-Cysteine methyl ester hydrochloride hazardous?
L-Cysteine methyl ester hydrochloride has GHS signal word Warning.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "L-Cysteine methyl ester hydrochloride (CAS 18598-63-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-14365-9 (accessed 2026-10-22).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.