L-Methionine
IUPAC: (2S)-2-amino-4-methylsulfanylbutanoic acid
| Formula / Notation | C5H11NO2S |
|---|---|
| CAS Number | 63-68-3 |
| Molecular Weight | 149.21 |
| Melting Point | 536 to 540 °F decomposes 541.4-543.2 °F (NTP, 1992) |
| Boiling Point | sublimes at 367 °F (NTP, 1992) |
| Density | 1.178 at 68 °F (NTP, 1992) - Denser than water; will sink |
| Solubility | Soluble (NTP, 1992) |
| Appearance | Minute hexagonal plates from dilute alcohol. (NTP, 1992) |
| Also Known As | (2S)-2-amino-4-methylsulfanylbutanoic acid; 63-68-3; methionine; h-Met-oh; (S)-2-Amino-4-(methylthio)butanoic acid; Cymethion; L-(-)-Methionine; S-Methionine; L-Methioninum; Neo-methidin |
| Category | Organic Compounds |
What is L-Methionine?
L-methionine is the L-enantiomer of methionine. It has a role as a micronutrient, a nutraceutical, an antidote to paracetamol poisoning, a mouse metabolite and a human metabolite. It is a L-alpha-amino acid, a methionine, an aspartate family amino acid and a proteinogenic amino acid. It is a conjugate base of a L-methioninium. It is a conjugate acid of a L-methioninate. It is an enantiomer of a D-methionine. It is a tautomer of a L-methionine zwitterion.
Formula & Notation
IUPAC Name: (2S)-2-amino-4-methylsulfanylbutanoic acid
Other Names / Synonyms: (2S)-2-amino-4-methylsulfanylbutanoic acid; 63-68-3; methionine; h-Met-oh; (S)-2-Amino-4-(methylthio)butanoic acid; Cymethion; L-(-)-Methionine; S-Methionine; L-Methioninum; Neo-methidin
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 536 to 540 °F decomposes 541.4-543.2 °F (NTP, 1992) |
| Boiling Point | sublimes at 367 °F (NTP, 1992) |
| Density | 1.178 at 68 °F (NTP, 1992) - Denser than water; will sink |
| Molecular Weight | 149.21 |
| Solubility | Soluble (NTP, 1992) |
| Appearance | Minute hexagonal plates from dilute alcohol. (NTP, 1992) |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
L-methionine is the L-enantiomer of methionine. It has a role as a micronutrient, a nutraceutical, an antidote to paracetamol poisoning, a mouse metabolite and a human metabolite. It is a L-alpha-amino acid, a methionine, an aspartate family amino acid and a proteinogenic amino acid. It is a conjugate base of a L-methioninium. It is a conjugate acid of a L-methioninate. It is an enantiomer of a D-methionine. It is a tautomer of a L-methionine zwitterion.
Used as an industrial feedstock, solvent, pharmaceutical intermediate, flavoring agent, or chemical building block.
Flammable or irritant. Many organic compounds are flammable liquids or vapours. Keep away from ignition sources. Consult SDS for specific hazard data.
The formula or notation for L-Methionine is: C5H11NO2S