Methionine (data page)

The complete data for Methionine

General information

Chemical formula: C₅H₁₁N O₂S
Molar mass: 149.21 g·mol^-1
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^a

PubChem: 876 (D) ^a, 6137 (L)^a

Physical properties

Structure

Crystal data

Spectral data

UV-Vis

NMR

Phase behavior

Solid properties

ρ_solid: 1.340 g.cm^-3
T_m: 281 °C

Liquid properties

Gas properties

Hazard properties

MSDS N/A

Main hazards:

- N/A

NFPA 704

Flash point

- N/A

R/S statement

R: N/A
S: N/A

RTECS number:
N/A

Chemical properties

XLogP: -2.308

pI: 5.74

pK_a: 2.16, 9.08

Tautomers:

Hydrogen bond: donor - 2; acceptor - 3

Pharmacological properties

Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)

References

^a 63-68-3 EINECS for L-Methionine
^a PubChem 876
^a PubChem 6137

The 20 common amino acids

By properties

Aliphatic	Branched-chain amino acids (Valine · Isoleucine · Leucine) · Methionine · Alanine · Proline · Glycine

Aromatic	Phenylalanine · Tyrosine · Tryptophan · Histidine

Polar, uncharged	Asparagine · Glutamine · Serine · Threonine

Positive charge (pK_a)	Lysine (≈10.8) · Arginine (≈12.5) · Histidine (≈6.1)

Negative charge (pK_a)	Aspartic acid (≈3.9) · Glutamic acid (≈4.1) · Cysteine (≈8.3) · Tyrosine (≈10.1)

General	Essential amino acid · Protein · Peptide · Genetic code

Other classifications

Essential amino acids · Ketogenic amino acid · Glucogenic amino acid

biochemical families: prot · nucl · carb (glpr, alco, glys) · lipd (fata/i, phld, strd, gllp, eico) · amac/i · ncbs/i · ttpy/i