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CAS No 13073-35-3 , (2S)-2-amino-4-ethylsulfanylbutanoic acid

  • Name: (2S)-2-amino-4-ethylsulfanylbutanoic acid
  • Synonyms: L-2-Amino-4-(ethylthio)butyric acid;L-Ethionine;(2S)-2-amino-4-ethylsulfanylbutanoic acid; Ethionine (VAN); (L)-Ethionine; L-S-Ethylhomocysteine; S-Ethyl-L-homocysteine; 13073-35-3;
  • CAS Registry Number:
  • Melting Point: 280 °C (dec.)(lit.)
  • Flash Point: 141.5°C
  • Boiling Point: 310.4°Cat760mmHg
  • Density: 1.164g/cm3
  • Refractive index: 22 ° (C=1, 1mol/L HCl)
  • Safety Statements: Questionable carcinogen with experimental carcinogenic data. Human mutation data reported. When heated to decomposition it emits very toxic fumes of NOx and SOx.
  • Hazard Symbols: Xi: Irritant;
  • Flash Point: 141.5°C
  • EINECS: 235-966-4
  • Molecular Weight: 163.23792
  • InchiKey: GGLZPLKKBSSKCX-YFKPBYRVSA-N
  • InChI: InChI=1S/C6H13NO2S/c1-2-10-4-3-5(7)6(8)9/h5H,2-4,7H2,1H3,(H,8,
    9)/t5-/m0/s1
  • Risk Statements: 36/37/38
  • Molecular Formula: C6H13NO2S
  • Molecular Structure:CAS No:13073-35-3 (2S)-2-amino-4-ethylsulfanylbutanoic acid

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References of (2S)-2-amino-4-ethylsulfanylbutanoic acid
Title: Ethionine
CAS Registry Number: 13073-35-3
CAS Name: S-Ethyl-L-homocysteine
Synonyms: 2-amino-4-(ethylthio)butyric acid; a-amino-g-(ethylmercapto)butyric acid; homocysteine S-ethyl ether
Molecular Formula: C6H13NO2S
Molecular Weight: 163.24
Percent Composition: C 44.15%, H 8.03%, N 8.58%, O 19.60%, S 19.64%
Line Formula: CH3CH2SCH2CH2CH(NH2)COOH
Literature References: Prepn from ethanethiol and acrolein, purification via Zn salt: Norton, US 2840587 (1958 to Dow). Prepn of DL-form and L-form: Armstrong, Lewis, J. Org. Chem. 16, 749 (1951). Resolution of D- and L-isomers: Greenstein et al., J. Biol. Chem. 204, 307 (1953). Review: E. Farber, "Ethionine Carcinogenesis" in A. Haddow, S. Weinhouse, Advan. Cancer Res. vol. 7 (Academic Press, New York, 1963) pp 383-474.
Properties: Crystals, dec 272-274°. [a]D24 +25.1°. Also reported as [a]D23 +20.1° (1N HCl) (Armstrong, Lewis).
Optical Rotation: [a]D24 +25.1°; [a]D23 +20.1° (1N HCl) (Armstrong, Lewis)
 
Derivative Type: DL-Form
CAS Registry Number: 67-21-0
Properties: Crystals, dec 257-260°. Also reported as dec 272-284° (Armstrong, Lewis).