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CAS No 7400-08-0 , (E)-3-(4-hydroxyphenyl)prop-2-enoic acid

  • Name: (E)-3-(4-hydroxyphenyl)prop-2-enoic acid
  • Synonyms: p-Hydroxycinnamic acid;p-coumaric acid; p-Cumaric acid; trans-p-Coumaric acid; 4-Coumaric acid; 4-Hydroxycinnamic acid;(E)-3-(4-hydroxyphenyl)prop-2-enoic acid; Para-Coumaric acid;
  • CAS Registry Number:
  • Melting Point: 212-214 ºC
  • Density: 1.329 g/cm3
  • Refractive index: 1.6
  • Safety Statements: R36/37/38
  • Hazard Symbols: Xi: Irritant;
  • EINECS: 231-000-0
  • Molecular Weight: 164.15802
  • InchiKey: NGSWKAQJJWESNS-ZZXKWVIFSA-N
  • InChI: InChI=1S/C9H8O3/c10-8-4-1-7(2-5-8)3-6-9(11)12/h1-6,10H,(H,11,12)/b6-3+
  • Risk Statements: S22;S26;S36/37/39
  • Molecular Formula: C9H8O3
  • Molecular Structure:CAS No:7400-08-0 (E)-3-(4-hydroxyphenyl)prop-2-enoic acid

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References of (E)-3-(4-hydroxyphenyl)prop-2-enoic acid
Title: p-Coumaric Acid
CAS Registry Number: 7400-08-0
CAS Name: 3-(4-Hydroxyphenyl)-2-propenoic acid
Synonyms: p-hydroxycinnamic acid; b-[4-hydroxyphenyl]acrylic acid
Molecular Formula: C9H8O3
Molecular Weight: 164.16
Percent Composition: C 65.85%, H 4.91%, O 29.24%
Literature References: Isoln: Hlasiwetz, Ann. 136, 31 (1865); Bamberger, Monatsh. Chem. 12, 459 (1891). Prepn: Eigel, Ber. 20, 2528 (1887); Konek, Pacsu, Ber. 51, 856 (1918). uv data: Wheeler, Covarrubias, J. Org. Chem. 28, 2015 (1963).
Properties: Needles, mp 210-213° (reported in early lit as 206°). Crystallizes in anhydrous form from conc hot aq soln, but as monohydrate from dil aq soln on slow cooling. Slightly sol in cold water; sol in hot water and alc, ether. Practically insol in benzene and ligroin. uv max (95% ethanol): 223, 286 nm (e 14450, 19000).
Melting point: mp 210-213° (reported in early lit as 206°)
Absorption maximum: uv max (95% ethanol): 223, 286 nm (e 14450, 19000)