Methionine

C₅H₁₁NO₂S

IUPAC: (2S)-2-Amino-4-(methylthio)butanoic acid

CAS: 63-68-3

Overview

Methionine is an essential sulfur-containing amino acid that serves as the initiator of protein synthesis in all eukaryotic cells.

Composition

Element Symbol Atoms Atomic Mass
Hydrogen H 11 1.0080
Carbon C 5 12.0110
Nitrogen N 1 14.0070
Oxygen O 2 15.9990
Sulfur S 1 32.0600

Elemental Composition

H
Hydrogen ×11
7.4%
C
Carbon ×5
40.2%
N
Nitrogen ×1
9.4%
O
Oxygen ×2
21.4%
S
Sulfur ×1
21.5%

Uses

  • • Animal feed additive
  • • Dietary supplement
  • • Pharmaceutical

Fun Facts

  • ✦ Every protein made in your body starts with methionine as the first amino acid

Structure

SMILES

CSCCC(C(=O)O)N

Properties

Type
organic
State
solid
Molar Mass
149.21 g/mol
Density
1.3400 g/cm³
Melting Point
281.0 °C
Solubility
56 g/L at 25°C

Molecular Descriptors

Exact Mass
149.0510
XLogP
-1.9
TPSA
88.6 Ų
H-Bond Donors
2
H-Bond Acceptors
4
Rotatable Bonds
4
Heavy Atoms
9
Complexity
97.0

Related Compounds

1,2-Dichloroethane

C₂H₄Cl₂

1,3-Butadiene

C₄H₆

1,4-Dioxane

C₄H₈O₂

1-Butanol

C₄H₁₀O

2-Propanol

C₃H₈O

Acetaldehyde

CH₃CHO

Acetamide

C₂H₅NO

Acetic Anhydride

C₄H₆O₃

Acetone

(CH₃)₂CO

Acetonitrile

C₂H₃N

Frequently Asked Questions

What is Methionine?
Methionine (C₅H₁₁NO₂S) is a organic compound with the IUPAC name (2S)-2-Amino-4-(methylthio)butanoic acid.
What is the molecular weight of Methionine?
Methionine has a molar mass of 149.21 g/mol.
What state is Methionine at room temperature?
Methionine is a solid at room temperature.
Is Methionine organic or inorganic?
Methionine is classified as an organic compound.
What elements make up Methionine?
Methionine (C₅H₁₁NO₂S) is composed of Hydrogen (H), Carbon (C), Nitrogen (N), Oxygen (O), Sulfur (S).