chempirical

Methionine

C5H11NO2SCAS 63-68-3149.21 g/mol

Open in Covalent MOL file
SNH2OOH
Carboxylic acidPrimary amineSulfide

Properties

Molecular formula
C5H11NO2S
Molar mass
149.21 g/mol
Exact mass
149.0510 Da
Density
1.178 g/mL (at 20 °C)
Melting point
280–282 °C (decomposes)
Boiling point
123–126 °C (at 15 Torr)
pKa
2.28, 9.21
Water solubility
56.6 g/L (25 °C)
logP
0.15Crippen estimate
Polar surface area
63.3 Ų
H-bond donors / acceptors
2 / 3
Rotatable bonds
4
Stereocentres
Sin SMILES atom order

Hazards

Not classified as hazardous under GHS by 211 ECHA notifiers. Aggregated from 211 ECHA notifications, via PubChem; a share says how many notifiers assign that statement.

Identifiers

CAS number
63-68-3
SMILES
CSCC[C@H](N)C(=O)O
InChIKey
FFEARJCKVFRZRR-BYPYZUCNSA-N
InChI
InChI=1S/C5H11NO2S/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/t4-/m0/s1

Weigh it out

Type any one amount. The others follow from the molar mass and density.

Names and synonyms

20 names · show all
  • L-Methionine
  • Methionine, L-
  • Cymethion
  • Butanoic acid, 2-amino-4-(methylthio)-, (S)-
  • 2-Amino-4-(methylthio)butyric acid
  • S-Methionine
  • α-Amino-γ-methylmercaptobutyric acid
  • γ-Methylthio-α-aminobutyric acid
  • (S)-2-Amino-4-(methylthio)butanoic acid
  • L-α-Amino-γ-methylthiobutyric acid
  • L-Homocysteine, S-methyl-
  • h-Met-oh
  • Acimethin
  • NSC 22946
  • S-Methyl-L-homocysteine
  • Secretory peptide (human clone HTXDU73)
  • Methiorep
  • Meth-o-tas
  • (2S)-2-Azaniumyl-4-methylsulfanylbutanoate
  • (2S)-2-Amino-4-(methylsulfanyl)butanoic acid

Work with Methionine

Predict the NMR spectrum1H and 13C shifts with multiplicities Make a solutionWhat to weigh for any molarity and volume Check drug-likenessLipinski, Veber and lead-likeness Isotope patternExact mass and the mass spectrum pattern

Stereoisomers, salts and isotopologues

The same compound in another form: other stereochemistry, a salt or hydrate, the free acid or base, or an isotope-labelled version.

D-Methionine348-67-4Enantiomer (+-)-Methionine59-51-8Stereo not defined Zinc methionine sulfate56329-42-1Salt, stereo not defined

Similar compounds

Homocystine462-10-269 % similar Homocystine626-72-269 % similar DL-Homocystine870-93-969 % similar S-Methylcysteine1187-84-467 % similar Ethionine13073-35-364 % similar D-Ethionine535-32-064 % similar DL-Ethionine67-21-064 % similar 2-Hydroxy-4-(methylthio)butyric acid583-91-561 % similar

Tanimoto similarity of circular fingerprints over the whole catalogue. All similar compounds

Same formula

L-Penicillamine1113-41-3 4-Aminotetrahydro-2H-thiopyran 1,1-dioxide210240-20-3 (±)-Penicillamine52-66-4 (-)-Penicillamine52-67-5

Elsewhere

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