L-thialysinium GHSJKUNUIHUPDF-BYPYZUCNSA-O chebi_ontology Major microspecies at pH 7.3. CHEBI:156132 165.230 C5H13N2O2S S-(beta-aminoethyl)-L-cysteine PMID:14766574 MetaCyc:S-2-AMINOETHYL-L-CYSTEINE +1 [O-]C([C@H](CSCC[NH3+])[NH3+])=O 165.06923 InChI=1S/C5H12N2O2S/c6-1-2-10-3-4(7)5(8)9/h4H,1-3,6-7H2,(H,8,9)/p+1/t4-/m0/s1 S-(2-aminoethyl)-L-cysteine S-substituted L-cysteine L-thialysine