L-ETHIONINE manufacturers
- L-ethionine
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- $9.80 / 1KG
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2020-02-11
- CAS:13073-35-3
- Min. Order: 1g
- Purity: ＞98%
- Supply Ability: 20 tons
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| | L-ETHIONINE Basic information |
| | L-ETHIONINE Chemical Properties |
| Melting point | 280 °C (dec.)(lit.) | | alpha | D24 +25.1°; D23 +20.1° (1N HCl) (Armstrong, Lewis) | | density | 1.085 (estimate) | | refractive index | 22 ° (C=1, 1mol/L HCl) | | storage temp. | Keep in dark place,Sealed in dry,2-8°C | | solubility | Aqueous Acid (Slightly), Water (Slightly) | | form | solid | | Boiling point | 310.4±37.0 °C(Predicted) | | pKa | 2.23±0.10(Predicted) | | color | White to Off-White | | Merck | 14,3738 | | CAS DataBase Reference | 13073-35-3(CAS DataBase Reference) | | EPA Substance Registry System | L-Ethionine (13073-35-3) |
| Hazard Codes | Xi | | Risk Statements | 36/37/38 | | Safety Statements | 26 | | WGK Germany | 3 | | RTECS | ES6825300 | | HS Code | 2930.90.4950 | | Hazardous Substances Data | 13073-35-3(Hazardous Substances Data) | | Toxicity | rat,LD,intraperitoneal,> 1gm/kg (1000mg/kg),LIVER: OTHER CHANGESLIVER: CHANGES IN LIVER WEIGHT,Acta Pathologica Japonica. Vol. 39, Pg. 281, 1989. |
| | L-ETHIONINE Usage And Synthesis |
| Chemical Properties | White Solid | | Uses | Ethionine-induced inhibition of protein synthesis and lowering of ATP level in the liver. | | Definition | ChEBI: An S-ethylhomocysteine that has S-configuration at the chiral centre. | | Purification Methods | Likely impurities are N-acetyl-(R and S)-ethionine, S-methionine, and R-ethionine. Crystallise it from water by adding 4volumes of EtOH or 85% aqueous EtOH. It sublimes at 196-216o/0.3mm with 99.1% recovery and unracemised [Gross & Gradsky J Am Chem Soc 77 1678 1955]. [Weiss & Stekol J Am Chem Soc 73 2399 1951, Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 pp 2658, 2659 1961, Beilstein 4 IV 3194.] |
| | L-ETHIONINE Preparation Products And Raw materials |
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