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| CAS No.: | 1464-42-2 |
|---|---|
| Name: | Selenomethionine |
| Article Data: | 1 |
| Molecular Structure: | |
|
|
|
| Formula: | C5H11 N O2 Se |
| Molecular Weight: | 196.108 |
| Synonyms: | Butyricacid, 2-amino-4-(methylselenyl)- (6CI,8CI);2-Amino-4-(methylseleno)butyricacid;2-Amino-4-(methylselenyl)butyric acid;DL-Selenomethionine;Seleniummethionine;Seleno-DL-methionine;Selenomethionine; |
| EINECS: | 215-977-0 |
| Density: | g/cm3 |
| Melting Point: | 267-269 ºC |
| Boiling Point: | 320.8°Cat760mmHg |
| Flash Point: | 147.8°C |
| Solubility: | soluble |
| Appearance: | white crystalline solid |
| Hazard Symbols: |
 
|
| Risk Codes: | R23/25;R33;R50/53 |
| Safety: | Poison by intravenous, intraperitoneal and intracervical routes. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx and Se. See also AMINES and SELENIUM COMPOUNDS. |
| Transport Information: | UN 3283 |
| PSA: | 63.32000 |
| LogP: | 0.65930 |
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Chemistry
IUPAC Name: 2-Amino-4-methylselanylbutanoic acid
The MF of Selenomethionine (CAS NO.1464-42-2) is C5H11NO2Se.
The MW of Selenomethionine (CAS NO.1464-42-2) is 196.11.
Synonyms of Selenomethionine (CAS NO.1464-42-2): Butanoic acid, 2-amino-4-(methylseleno)-, (2S)- ; (2S)-2-Amino-4-(methylselanyl)butanoic acid
Product Categories: Methionine [Met, M];Amino Acids;I - Z;Modified Amino Acids
Apperance: Colorless,transparent six square lamellae with metallic luster
Flash Point: 147.8 °C
Boiling Point: 320.8 °C
Melting Point: 267-269 °C
Storage temp: -20 °C
Water Solubility: soluble
EINECS: 215-977-0
Uses
Selenomethionine (CAS NO.1464-42-2) is used as intermediates for medicine and health products and feed additives.Incorporation of selenomethionine into proteins in place of methionine aids the structure elucidation of proteins by X-ray crystallography using multi-wavelength anomalous diffraction (MAD). The incorporation of heavy atoms such as selenium helps solving the phase problem in X-ray crystallography.
Toxicity Data With Reference
| 1. | dns-rat:lvr 100 µmol/L | CALEDQ Cancer Letters (Shannon, Ireland). 10 (1980),75. | ||
| 2. | ipr-rat LD50:11 mg/kg | JPETAB Journal of Pharmacology and Experimental Therapeutics. 108 (1953),437. | ||
| 3. | ivn-mus LD50:22 mg/kg | NRTXDN Neurotoxicology. 2 (1981),383. | ||
| 4. | icv-mus LD50:13 mg/kg | NRTXDN Neurotoxicology. 2 (1981),838. | ||
| 5. | ivn-pig LDLo:7450 µg/kg | AJVRAH American Journal of Veterinary Research. 34 (1973),1227. |
Consensus Reports
Selenium and its compounds are on the Community Right-To-Know List.
Safety Profile
Poison by intravenous, intraperitoneal and intracervical routes. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx and Se. See also AMINES and SELENIUM COMPOUNDS.Safety information of Selenomethionine (CAS NO.1464-42-2):
Hazard Codes 
T,
N
Risk Statements
23/25 Toxic by inhalation and if swallowed
33 Danger of cumulative effects
50/53 Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety Statements
20/21 When using, do not eat, drink or smoke
28 After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer)
45 In case of accident or if you feel unwell, seek medical advice immediately (show label where possible)
60 This material and/or its container must be disposed of as hazardous waste
61 Avoid release to the environment. Refer to special instructions safety data sheet
RIDADR UN 3283
RTECS ES7110000
Standards and Recommendations
OSHA PEL: TWA 0.2 mg(Se)/m3
ACGIH TLV: TWA 0.2 mg(Se)/m3
DFG MAK: 0.1 mg(Se)/m3
Specification
Selenomethionine is an amino acid containing selenium. The L-isomer of selenomethionine, known as Se-met and Sem, is a common natural food source of selenium.The incorporation of selenomethionine into tissue proteins and keratin in horses causes alkali disease. Alkali disease is characterized by emaciation, loss of hair, deformation and shedding of hooves, loss of vitality and erosion of the joints of long bones.