A5383412
DL-Methionine , 99% , 59-51-8
Synonym(s):
(±)-2-Amino-4-(methylmercapto)butyric acid;DL -2-Amino-4-(methylthio)butanoic acid;DL -Methionine
CAS NO.：59-51-8
Empirical Formula: C5H11NO2S
Molecular Weight: 149.21
MDL number: MFCD00063097
EINECS: 200-432-1
| Pack Size | Price | Stock | Quantity |
| 100G | RMB31.20 | In Stock |
|
| 500G | RMB95.20 | In Stock |
|
| 2.5KG | RMB383.20 | In Stock |
|
| others | Enquire |
Update time: 2022-07-08
PRODUCT Properties
| Melting point: | 284 °C (dec.)(lit.) |
| alpha | -1～+1°(D/20℃)(c=8,HCl) |
| Boiling point: | 306.9±37.0 °C(Predicted) |
| Density | 1.34 |
| FEMA | 3301 | D,L-METHIONINE |
| refractive index | 1.5216 (estimate) |
| storage temp. | 2-8°C |
| solubility | 1 M HCl: 0.5 M at 20 °C, clear, colorless |
| form | Crystals or Crystalline Powder |
| pka | 2.13(at 25℃) |
| color | White |
| Odor | mild sulfurous acidic |
| Odor Type | acidic |
| biological source | synthetic |
| optical activity | [α]/D, c = 5 in 5 M HCl (inactive) |
| Water Solubility | 2.9 g/100 mL (20 ºC) |
| Merck | 14,5975 |
| JECFA Number | 1424 |
| BRN | 636185 |
| BCS Class | 1 |
| Stability: | Stable. Incompatible with strong oxidising agents. |
| InChIKey | FFEARJCKVFRZRR-UHFFFAOYSA-N |
| LogP | 0.37 |
| CAS DataBase Reference | 59-51-8(CAS DataBase Reference) |
| NIST Chemistry Reference | Methionine(59-51-8) |
| EPA Substance Registry System | Methionine (59-51-8) |
Description and Uses
Methionine is an α-amino acid with the chemical formula HO2CCH(NH2)CH2CH2SCH3. This essential amino acid is classified as nonpolar. This amino-acid is coded by the initiation codon AUG which indicates mRNA's coding region where translation into protein begins.
Production of volatile compounds related to the flavour of foods from the Strecker degradation of DL-methionine. Addition of methionine in appropriate amounts to these foods might be expected to improve protein value. Economically, DL-methionine would be preferable.
Safety
| Hazard Codes | Xi |
| Risk Statements | 33-36/37/38 |
| Safety Statements | 24/25-36-26 |
| WGK Germany | 2 |
| RTECS | PD0457000 |
| F | 10-23 |
| TSCA | Yes |
| HS Code | 29304090 |
