≥98.0% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.
Store at 2-8°C Ships Wet ice Check lot-specific COA for exact specifications.
SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.
Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.
S-(2-Carboxyethyl)-L-cysteine (S-Carboxyethylcysteine) is a non-protein (modified) sulfur amino acid. S-(2-Carboxyethyl)-L-cysteine is present in Acacia seed. S-(2-Carboxyethyl)-L-cysteine can affect the seed’s protein use in rats. S-(2-Carboxyethyl)-L-cysteine suppresses the methionine-induced growth rate, and has a negative effect on the plasma amino acid levels in rats.
| Canonical Smiles | C(CSCC(C(=O)O)N)C(=O)O |
|---|---|
| IUPAC Name | (2R)-2-amino-3-(2-carboxyethylsulfanyl)propanoic acid |
| InChIKey | FBPINGSGHKXIQA-BYPYZUCNSA-N |
| INCHI | 1S/C6H11NO4S/c7-4(6(10)11)3-12-2-1-5(8)9/h4H,1-3,7H2,(H,8,9)(H,10,11)/t4-/m0/s1 |
| Isomeric SMILES | C(CSC[C@@H](C(=O)O)N)C(=O)O |
| RTECS | AY4300000 |
| PubChem CID | 23618202 |
| Molecular Weight | 193.22 |
| Reaxy-Rn | 1725406 |
Comprehensive hazard, handling, storage, and regulatory compliance document.
Download SDS →Lot-specific quality data. Enter your lot number to retrieve the exact COA.
Look up COA →Full quality attributes and acceptance criteria for this grade.
View spec sheet →Taxonomy Tree
| Kingdom | Organic compounds |
|---|---|
| Superclass | Organic acids and derivatives |
| Class | Carboxylic acids and derivatives |
| Subclass | Amino acids, peptides, and analogues |
| Intermediate Tree Nodes | Amino acids and derivatives - Alpha amino acids and derivatives - Cysteine and derivatives |
| Direct Parent | L-cysteine-S-conjugates |
| Alternative Parents | L-alpha-amino acids Dicarboxylic acids and derivatives Amino acids Sulfenyl compounds Dialkylthioethers Carboxylic acids Organic oxides Monoalkylamines Hydrocarbon derivatives Carbonyl compounds |
| Molecular Framework | Aliphatic acyclic compounds |
| Substituents | L-cysteine-s-conjugate - Alpha-amino acid - L-alpha-amino acid - Dicarboxylic acid or derivatives - Amino acid - Carboxylic acid - Thioether - Dialkylthioether - Sulfenyl compound - Organic nitrogen compound - Hydrocarbon derivative - Primary amine - Organosulfur compound - Organooxygen compound - Organonitrogen compound - Primary aliphatic amine - Organic oxide - Organic oxygen compound - Carbonyl group - Amine - Aliphatic acyclic compound |
| Description | This compound belongs to the class of organic compounds known as l-cysteine-s-conjugates. These are compounds containing L-cysteine where the thio-group is conjugated. |
| External Descriptors | Not available |
Find and download the COA for your product by matching the lot number on the packaging.
| Lot Number | Certificate Type | Date | Item |
|---|---|---|---|
 F2419327 | Certificate of Analysis | Jan 20, 2026 | S161421 |
| F2419328 | Certificate of Analysis | Jan 20, 2026 | S161421 |
| F2419382 | Certificate of Analysis | Jan 20, 2026 | S161421 |
| F2419384 | Certificate of Analysis | Jan 20, 2026 | S161421 |
| Specific Rotation[α] | -10° (C=2,1mol/L Hcl) |
|---|---|
| Melt Point(°C) | 198 °C(dec.) |
| Molecular Weight | 193.220 g/mol |
| XLogP3 | -3.200 |
| Hydrogen Bond Donor Count | 3 |
| Hydrogen Bond Acceptor Count | 6 |
| Rotatable Bond Count | 6 |
| Exact Mass | 193.041 Da |
| Monoisotopic Mass | 193.041 Da |
| Topological Polar Surface Area | 126.000 Ų |
| Heavy Atom Count | 12 |
| Formal Charge | 0 |
| Complexity | 173.000 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 1 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| The total count of all stereochemical bonds | 0 |
| Covalently-Bonded Unit Count | 1 |
