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L-Methionine
Chemical name: L-2-Amino-4-(methythio) butanoic acid
Molecular formula: C5H11NO2S
Molecular weight: 149.21
Specification:
L-Methionine | |
Item | Standard |
Assay (on dry basis) | 98.5-101.5% |
Specific rotation | +21.9° ~+24.1° |
Iron (Fe), %≤ | 0.003 |
Heavy metal, %≤ | 0.0015 |
Arsenic, %≤ | 0.00015 |
Loss on drying, %≤ | 0.3 |
Residue on drying, %≤ | 0.1 |
Application:
L-Hydroxyproline, a hydroxylated form of the amino acid proline, is a major component of collagen, L-Hydroxyproline can be used in the synthesis of mycology medicals (anti-fungals) and chiral ligands (enantioselective ethylation of aldehydes). It is also used as important raw materials in the cosmetic field.
Pharmaceutical raw materials L-Methionine