Basic information
- CAS
1320-75-8- Standard SMILES
CCSC[C@H](N)C(=O)O- InChIKey
ULXKXLZEOGLCRJ-BYPYZUCNSA-N- Molecular formula
- C5H11NO2S
- Average molar mass
- 149.21 g/mol
- Monoisotopic mass
- 149.05104977
Names & identifiers
- Preferred name
- S-Ethyl-L-cysteine
- IUPAC
- (2R)-2-amino-3-ethylsulfanylpropanoic acid
- English name
- S-ethylcysteine
- Molecular formula
- C5H11NO2S
- Molecular weight
- 149.21
Names & synonyms
S-Ethyl-L-cysteine2629-59-6S-EthylcysteineL-Cysteine, S-ethyl-3-(Ethylthio)alanines-ethyl cysteine(2R)-2-amino-3-(ethylsulfanyl)propanoic acidCysteine, S-ethyl-EINECS 220-106-2NSC 49244B46YS921BY2139-90-4
Show more names
S-Ethyl-DL-cysteine
3-ethylthio-L-alanineETHYL-CYSTEINE22196-52-7DTXSID9020588CHEBI:156209(2R)-2-azanyl-3-ethylsulfanyl-propanoic acidRefChem:884228DTXCID50588
Database identifiers
- CAS
1320-75-8、2139-90-4、22196-52-7、2629-59-6- PubChem CID
- 92185
- DTXSID
DTXSID9020588- ChEMBL
CHEMBL60475- ChEBI
CHEBI:156209- UNII
- B46YS921BY
- EC Number
- 220-106-2、654-520-3
- Nikkaji
- J192.144D
Properties
Computed structural properties
- XLogP
- -2.3
- Topological polar surface area
- 88.6 Ų
- Hydrogen bond donors
- 2
- Hydrogen bond acceptors
- 4
- Rotatable bonds
- 4
- Heavy atoms
- 9
- Formal charge
- 0
- Complexity
- 97
Physicochemical properties
- Melting point
- 241 · 241-242 °C
- Boiling point
- 289.2 · 289.2±35.0 °C(Predicted)
- Density
- 1.206 · 1.206±0.06 g/cm3(Predicted)
- pka
- 2.1 · 2.10±0.10(Predicted)
- FDA UNII
- 46 YS921BY · B46YS921BY
Safety & regulation
GHS classification
GHS Classification
Warning
H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
P264+P265, P280, P305+P351+P338, and P337+P317 (click each P-code to see the statement)
Aggregated GHS information provided per 38 reports by companies from 1 notifications to the ECHA C&L Inventory.；Information may vary between notifications depending on impurities, additives, and other factors. The percentage value in parenthesis indicates the notified classification ratio from companies that provide hazard codes. Only hazard codes with percentage values above 10% are shown. For more detailed information, please visit ECHA C&L website.
Hazard information
Hazard Classes and CategoriesEye Irrit. 2 (100%)
Chemistry & industry
Suppliers2 total
苏州爱玛特生物科技有限公司0512-56316828 4008675858 · [email protected]
淄博航宇生物科技发展有限公司+86-0533-2185556 +86-15965530500 · [email protected]
Additional notes
DefinitionChEBI: S-ethyl-L-cysteine is a S-alkyl-L-cysteine that is L-cysteine in which the hydrogen of the thiol group is substituted by an ethyl group. It has a role as an antitubercular agent. It is a tautomer of a S-ethyl-L-cysteine zwitterion.
Related reactions
1 records
Compound notes
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