CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Solid; [Merck Index] Colorless or white solid with a faint odor; [HSDB] White powder; [Sigma-Aldrich MSDS] |
|---|---|
| Boiling Point | 300.00 to 301.00 °C. @ 760.00 mm Hg |
| Melting Point | 281 °C |
| Solubility | 32.7 mg/mL at 25 °C |
| Density | Relative density (water = 1): 1.3 |
| Vapor Pressure | 0.00000052 [mmHg] |
| Decomposition | 281 °C |
| Ionization Efficiency | Negative |
| Chemical Classes | Biological Agents -> Amino Acids and Derivatives |
COMPUTED DESCRIPTORS
| Molecular Weight | 149.21 g/mol |
|---|---|
| XLogP3 | -1.9 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 4 |
| Exact Mass | 149.05104977 g/mol |
| Monoisotopic Mass | 149.05104977 g/mol |
| Topological Polar Surface Area | 88.6 Ų |
| Heavy Atom Count | 9 |
| Formal Charge | 0 |
| Complexity | 97 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 1 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Methionine is a sulfur-containing amino acid that is butyric acid bearing an amino substituent at position 2 and a methylthio substituent at position 4. It has a role as an Escherichia coli metabolite, a Saccharomyces cerevisiae metabolite, a plant metabolite, a Daphnia magna metabolite and an algal metabolite. It is an alpha-amino acid and a sulfur-containing amino acid. It is functionally related to a butyric acid. It is a conjugate base of a methioninium. It is a conjugate acid of a methioninate. It is a tautomer of a methionine zwitterion.