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CAS No 7365-45-9 , 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid Search by region : China

  • Name: 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid
  • Synonyms: AG-G-91563; 4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid;2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid;7365-45-9; 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid;
  • CAS Registry Number:
  • Melting Point: 234-238 ºC
  • Refractive index: n20/D 1.339
  • Safety Statements: 24/25-22-36-26
  • Hazard Symbols: Xi: Irritant;
  • HS Code: 29335995
  • EINECS: 230-907-9
  • Molecular Weight: 238.30452
  • InchiKey: JKMHFZQWWAIEOD-UHFFFAOYSA-N
  • InChI: InChI=1S/C8H18N2O4S/c11-7-5-9-1-3-10(4-2-9)6-8-15(12,13)14/h11H,1-8H2,
    (H,12,13,14)
  • Risk Statements: S22;S24/25
  • Molecular Formula: C8H18N2O4S
  • Molecular Structure:CAS No:7365-45-9 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid

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  • Molecular formula: C8H18N2O4S Molecular weight: 238.305 The H key to accept the body: 6 The H key supply: 2 Molecular weight: 238.306 Reverse key: 4 Hydrophobic parameter: -4.07 In violation of a number: 0 Appearance: white crystalline powder MP/BP C...
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    References of 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethanesulfonic acid
    Title: HEPES
    CAS Registry Number: 7365-45-9
    CAS Name: 4-(2-Hydroxyethyl)-1-piperazineethanesulfonic acid
    Synonyms: N-(2-hydroxyethyl)piperazine-N￠-2-ethanesulfonic acid
    Molecular Formula: C8H18N2O4S
    Molecular Weight: 238.30
    Percent Composition: C 40.32%, H 7.61%, N 11.76%, O 26.86%, S 13.46%
    Literature References: One of several zwitterionic N-substituted aminosulfonic acids known as Good Buffers, active in the pH range of 6-8.5. Prepn: N. E. Good et al., Biochemistry 5, 467 (1966). Buffering characteristics: W. J. Ferguson et al., Anal. Biochem. 104, 300 (1980). Temperature effects on pKa and pH: R. N. Roy et al., Cryo-Lett. 6, 285 (1985). Interaction with hydroxyl radicals: M. Hicks, J. M. Gebicki, FEBS Lett. 199, 92 (1986). Interference with Lowry protein determination: H. M. Himmel, W. Heller, J. Clin. Chem. Clin. Biochem. 25, 909 (1987). Use as biological buffer: H. Eagle, Science 174, 500 (1971); K. V. Rao, Indian J. Exp. Biol. 15, 552 (1977); E. D. Lalague et al., J. Microsc. 127, 307 (1982); G. I. McFadden, M. Melkonian, Phycologia 25, 551 (1986).
    Properties: Crystals from alcohol + water, mp 234°. pKa1 ?3, pKa2 (20°) 7.55. DpKa/°C -0.014. Saturated aqueous soln is 2.25M at 0°.
    Melting point: mp 234°
    pKa: pKa1 ?3, pKa2 (20°) 7.55; pKa/°C -0.014
    Use: Biological buffer.