L-Cysteine ethyl ester hydrochloride
Also known as: H-Cys-OEt.HCl, Ethyl cysteine hydrochloride, Ethyl L-cysteinate hydrochloride, L-Cysteine ethyl ester HCl, Cystanin, Ethyl cysteinate hydrochloride, L-Cysteine, ethyl ester, hydrochloride (1:1), ethyl (2R)-2-amino-3-sulfanylpropanoate hydrochloride
L-Cysteine ethyl ester hydrochloride (CAS 868-59-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C5H12ClNO2S and a molecular weight of 185.672 g/mol. Key properties include a melting point of 123-125 °C(lit.), a boiling point of 205.9ºC at 760 mmHg, a density of 1.391 g/cm3 and a flash point of 78.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 868-59-7
- Jingsj CID
- J-961973-2
- Molecular Formula
- C5H12ClNO2S
- Molecular Weight
- 185.672 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 123-125 °C(lit.) |
|---|---|
| Boiling Point | 205.9ºC at 760 mmHg |
| Density | 1.391 g/cm3 |
| Flash Point | 78.3ºC |
| Exact Mass | 185.027725 |
| PSA | 91.12000 |
| LogP | 1.30890 |
| Refractive Index | -11.5 ° (C=8, 1mol/L HCl) |
Activity & Biological Data
| Additional Information | [1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-807. |
|---|
Frequently Asked Questions
What is the CAS number of L-Cysteine ethyl ester hydrochloride?
The CAS number of L-Cysteine ethyl ester hydrochloride is 868-59-7.
What are the molecular formula and molecular weight of L-Cysteine ethyl ester hydrochloride?
L-Cysteine ethyl ester hydrochloride has molecular formula C5H12ClNO2S and molecular weight 185.672 g/mol.
What are the upstream and downstream products of L-Cysteine ethyl ester hydrochloride?
For L-Cysteine ethyl ester hydrochloride, Upstream Products: Ethanol, L-Cysteine hydrochloride anhydrous, L-Cysteine; Downstream Products: Ethyl 6-hydroxybenzo[d]thiazole-2-carboxylate, benzoic 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. "L-Cysteine ethyl ester hydrochloride (CAS 868-59-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-961973-2 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.