S-ethyl-L-cysteine

CHEBI:156209 ·resolve ·ANTIMYCOBACTERIAL ·EXACT SEEDED

A S-alkyl-L-cysteine that is L-cysteine in which the hydrogen of the thiol group is substituted by an ethyl group. — ChEBI

Machine-generated and unreviewed. Identity, structure and cross-references come straight from ChEBI's and CARD's own data; no curator has signed off on this record yet.

Classification

Strictly broader compounds or drug classes this molecule belongs to.

Label unavailable CHEBI:47915

Chemical structure

Computed structure properties
Molecular formula	C5H11NO2S
Charge	0
Average mass	149.215 Da
Monoisotopic mass	149.05105 Da
Source	ChEBI
InChIKey	ULXKXLZEOGLCRJ-BYPYZUCNSA-N

SMILES

CCSC[C@H](N)C(=O)O

InChI

InChI=1S/C5H11NO2S/c1-2-9-3-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/t4-/m0/s1

Also called

(2R)-2-amino-3-(ethylsulfanyl)propanoic acid (EXACT_SYNONYM)— chebi
(2R)-2-azanyl-3-ethylsulfanyl-propanoic acid (EXACT_SYNONYM)— chebi
3-(ethylthio)alanine (EXACT_SYNONYM)— chebi
3-ethylthio-L-alanine (EXACT_SYNONYM)— chebi
S-ethyl cysteine (EXACT_SYNONYM)— chebi
S-ethylcysteine (EXACT_SYNONYM)— chebi

Cross-references

Identifiers for this same structure in other resources. An accession that lands on two different structures in this corpus is withheld from both rather than shown here, since it names at most one of them.

Activity roles

Every antimicrobial role a source asserts for this compound — the unreduced evidence behind its antimicrobial_class.

antitubercular agent CHEBI:33231

Source concepts

Every upstream concept that resolved to this record. The merge is the product: this is what shows ChEBI and CARD are describing the same structure.

Upstream concepts merged into this record
Source	Native ID	Label	Minted CURIE	Version
CHEBI	`CHEBI:156209`	S-ethyl-L-cysteine	`antibioticmech:chebi-4bca1bca78`	2026-08-30

Curation history

SEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Seeded from data/raw/ inventories (CHEBI)
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories

Provenance

Seeded by scripts/seed_from_sources.py from the committed inventories in data/raw/. View the record (YAML).

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