The IUPAC name of L-(+)-Selenomethionine is (2S)-2-amino-4-methylselanylbutanoic acid. With the CAS registry number 3211-76-5, it is also named as Selenomethionine. The product's categories are Amino Acid Derivatives; Methionine [Met, M]; Amino Acids; Antioxidant; Biochemistry; Biological-modified Amino Acids; Classes of Metal Compounds; Se (Selenium) Compounds; Semimetal Compounds. Besides, it is white to off-white powder, which should be stored in closed, cool and dry place at -20 °C. In addition, its molecular formula is C₅H₁₁NO₂Se and molecular weight is 196.11.

The other characteristics of this product can be summarized as: (1)ACD/LogP: 0.15; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5):; (4)ACD/LogD (pH 7.4):; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 3; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 63.32 Å²; (13)Flash Point: 147.803 °C; (14)Melting Point: 265 °C; (15)Solubility: H₂O: 50 mg/mL; (16)alpha: 18 °(c=1, 1N HCl); (17)Enthalpy of Vaporization: 61.843 kJ/mol; (18)Boiling Point: 320.78 °C at 760 mmHg; (19)Vapour Pressure: 0 mmHg at 25 °C.

Preparation of L-(+)-Selenomethionine: this chemical can be prepared by 2-tert-Butoxycarbonylamino-4-methylselanyl-butyric acid.



This reaction needs trifluoroacetic acid and CH₂Cl₂ at ambient temperature for 30 min. The yield is 96 %.

Uses of L-(+)-Selenomethionine: this chemical can be used to incorporate into proteins in place of methionine aids the structure elucidation of proteins by X-ray crystallography using multi-wavelength anomalous diffraction (MAD). It also can be used as food additive.

When you are using this chemical, please be cautious about it as the following: it is toxic by inhalation and if swallowed. It is also danger of cumulative effects. When using, do not smoke, eat or drink. And after contact with skin, wash immediately with plenty of soap-suds. Moreover, it is very toxic to aquatic organisms that may cause long-term adverse effects in the aquatic environment. This material and its container must be disposed of as hazardous waste. Additionally, please avoid release to the environment. Refer to special instructions / safety data sheets. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

People can use the following data to convert to the molecule structure.
(1)SMILES: C[Se]CC[C@@H](C(=O)O)N
(2)InChI: InChI=1/C5H11NO2Se/c1-9-3-2-4(6)5(7)8/h4H,2-3,6H2,1H3,(H,7,8)/t4-/m0/s1
(3)InChIKey: RJFAYQIBOAGBLC-BYPYZUCNBA