L-Methionine
L-Met
- CAS
- 63-68-3
- EC
- 200-562-9
- Sectors
- Animal Nutrition, Food & Nutrition, Pharma & Healthcare
L-Methionine (CAS 63-68-3) is a sulfur-containing essential amino acid, supplied as a white crystalline powder with a characteristic odor, and it is used in pharmaceuticals, feed additives and food fortification, where it supports methylation processes and protein synthesis.
Typical Properties
| Molecular formula | C5H11NO2S |
|---|---|
| Molecular weight | 149.21 g/mol |
| Appearance | White crystalline powder |
| Form | Solid |
| Color | White |
| Odor | Slight characteristic |
| Melting point | 280-282 °C (decomp) |
| Boiling point | 123-126 °C @ Press: 15 Torr |
| Density | 0.99961 g/cm³ (Solid) @ Temp: 25 °C |
| Water solubility | Soluble |
| pH | 5-7 (10g/l, H2O, 20°C) |
| HS code | 29304010 |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
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L-Methionine
Applications
Used in pharmaceuticals, feed additives, and food fortification. It supports liver function, antioxidant defense, and detoxification.
Safety & Risks
Non-toxic; store away from strong oxidizers and humidity.
Packaging
Supplied in 25 kg PE-lined drums or paper bags. Store cool, dry, and tightly sealed.