S-Allyl-L-cysteine

Also known as: L-Deoxyalliin, S-allylcysteine, SAC, Deoxyalliin, 3-(Allylthio)-L-alanine, (R)-3-(Allylthio)-2-aminopropanoic acid, (R)-Allylthio-2-aminopropionic acid, Allylcysteine, S-2-Propenylcysteine, (2R)-3-(Allylthio)-2-aminopropanoic acid, (2R)-3-allylsulfanyl-2-amino-propionic acid, (L)-3-(ALLYLSULFENYL)-ALANINE, CYSTEINE, S-ALLYL-L-, MFCD00151975

S-Allyl-L-cysteine (CAS 21593-77-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C6H11NO2S and a molecular weight of 161.222 g/mol. Key properties include a melting point of 235-236 ºC, a boiling point of 300 ºC, a density of 1.191 and a flash point of 135 ºC. It is classified under GHS with signal word Warning and hazard statements H317 — May cause an allergic skin reaction. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 21593-77-1
Jingsj CID: J-46556-6
Molecular Formula: C₆H₁₁NO₂S
Molecular Weight: 161.222 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	235-236 ºC
Boiling Point	300 ºC
Density	1.191
Flash Point	135 ºC
Exact Mass	161.051056
PSA	88.62000
LogP	1.31
Vapor Pressure	0.0±1.3 mmHg at 25°C
Refractive Index	1.543
Storage Conditions	2-8°C

GHS Safety & Compliance

IrritantSignal word: Warning

H317 — May cause an allergic skin reaction

Activity & Biological Data

Additional Information	[1]. Kosuge Y, et al. S-allyl-L-cysteine selectively protects cultured rat hippocampal neurons from amyloid beta-protein- and tunicamycin-induced neuronal death. Neuroscience. 2003;122(4):885-95. [2]. Dutt V, et al. S-allyl cysteine inhibits TNFα-induced skeletal muscle wasting through suppressing proteolysis and expression of inflammatory molecules. Biochim Biophys Acta. 2018 Apr;1862(4):895-906.

Additional Information

[1]. Kosuge Y, et al. S-allyl-L-cysteine selectively protects cultured rat hippocampal neurons from amyloid beta-protein- and tunicamycin-induced neuronal death. Neuroscience. 2003;122(4):885-95. [2]. Dutt V, et al. S-allyl cysteine inhibits TNFα-induced skeletal muscle wasting through suppressing proteolysis and expression of inflammatory molecules. Biochim Biophys Acta. 2018 Apr;1862(4):895-906.

Customs & Trade Information

HS Code	2930909090
Summary	2930909090. 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 S-Allyl-L-cysteine?

The CAS number of S-Allyl-L-cysteine is 21593-77-1.

What are the molecular formula and molecular weight of S-Allyl-L-cysteine?

S-Allyl-L-cysteine has molecular formula C6H11NO2S and molecular weight 161.222 g/mol.

Is S-Allyl-L-cysteine hazardous?

S-Allyl-L-cysteine has GHS signal word Warning and hazard statements H317 — May cause an allergic skin reaction.

What are the upstream and downstream products of S-Allyl-L-cysteine?

For S-Allyl-L-cysteine, Upstream Products: L-Cysteine hydrochloride anhydrous, Allyl bromide, L-Cysteine; Downstream Products: Diallyl disulfide, Allicin, Pyruvic acid.

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

Last updated: 8/21/2026

How to cite: Jingsj. "S-Allyl-L-cysteine (CAS 21593-77-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-46556-6 (accessed 2026-11-06).

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