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The complete data for Methionine ( v )
	General informationChemical formula: C5H11NO2S Molar mass: 149.21 g·mol Systematic name: (S)2-amino-4-methylsulfanyl-butanoic acid Abbreviations: M, Met Synonyms: ?
Database data
SMILES: CSCCC(C(=O)O)N InChI=InChI=1/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/f/h7H (L) 1/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/t4-/m0/s1/f/h7H (D) ATC: N/A CAS: 63-68-3 DrugBank: N/A EINECS: 200-562-9 PubChem: 876 (D) , 6137 (L)
Physical properties
Structure Crystal data Spectral data UV-Vis IR NMR MS Phase behavior Solid properties ρsolid: 1.340 g.cm Tm: 281 °C Liquid properties Gas properties
Hazard properties
MSDS N/A Main hazards:- N/A NFPA 704 Flash point- N/A RTECS number: N/A
Chemical properties
XLogP: -2.308 pI: 5.74 pKa: 2.16, 9.08 Tautomers: Hydrogen bond: donor - 2;  acceptor - 3
Pharmacological properties

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• Except where noted otherwise, data relate to Standard temperature and pressure.
• Reliability of data general note.

References

1. ^a 63-68-3 EINECS for L-Methionine
2. ^a CID 876 from PubChem
3. ^a CID 6137 from PubChem

v t e Encoded (proteinogenic) amino acids
General topics	Protein Peptide Genetic code
By properties	Aliphatic Branched-chain amino acids (Valine Isoleucine Leucine) Methionine Alanine Proline Glycine Aromatic Histidine Tyrosine Tryptophan Phenylalanine Polar, uncharged Asparagine Glutamine Serine Threonine Positive charge (pKa) Lysine (≈10.8) Arginine (≈12.5) Histidine (≈6.1) Pyrrolysine Negative charge (pKa) Aspartic acid (≈3.9) Glutamic acid (≈4.1) Selenocysteine (≈5.4) Cysteine (≈8.3) Tyrosine (≈10.1)
Amino acids types: Encoded (proteins) Essential Non-proteinogenic Ketogenic Glucogenic Secondary amino Imino acids D-amino acids Dehydroamino acids

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