L-Homocysteine
Also known as: (S)-2-Amino-4-mercaptobutanoic acid, (S)-Homocysteine, 2-Amino-4-mercaptobutyric acid, L-2-Amino-4-mercaptobutyric acid, Homocysteine
L-Homocysteine (CAS 6027-13-0) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C4H9NO2S and a molecular weight of 135.185 g/mol. Key properties include a melting point of 231 °C, a boiling point of 299.7±35.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 135.0±25.9 °C. It is classified under GHS with signal word Warning and hazard statements H302 — Harmful if swallowed. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 6027-13-0
- Jingsj CID
- J-1113405-7
- Molecular Formula
- C4H9NO2S
- Molecular Weight
- 135.185 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 231 °C |
|---|---|
| Boiling Point | 299.7±35.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 135.0±25.9 °C |
| Exact Mass | 135.035400 |
| PSA | 102.12000 |
| LogP | 0.22 |
| Vapor Pressure | 0.0±1.3 mmHg at 25°C |
| Refractive Index | 1.538 |
| Storage Conditions | ?20°C |
GHS Safety & Compliance
- H302 — Harmful if swallowed
Activity & Biological Data
| Target | Human Endogenous Metabolite |
|---|---|
| Additional Information | [1]. Finkelstein JD, et al. Homocysteine. Int J Biochem Cell Biol. 2000 Apr;32(4):385-9. [2]. Leng YP, et al. l-Homocysteine-induced cathepsin V mediates the vascular endothelial inflammation in hyperhomocysteinaemia. Br J Pharmacol. 2018 Apr;175(8):1157-1172. |
Frequently Asked Questions
What is the CAS number of L-Homocysteine?
The CAS number of L-Homocysteine is 6027-13-0.
What are the molecular formula and molecular weight of L-Homocysteine?
L-Homocysteine has molecular formula C4H9NO2S and molecular weight 135.185 g/mol.
Is L-Homocysteine hazardous?
L-Homocysteine has GHS signal word Warning and hazard statements H302 — Harmful if swallowed.
What are the upstream and downstream products of L-Homocysteine?
For L-Homocysteine, Upstream Products: L-Methionine, L-Homocysteine thiolactone hydrochloride, L-Homocystine; Downstream Products: L-Cystathionine, Water, hydrogen sulfide.
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-Homocysteine (CAS 6027-13-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1113405-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.