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CAS No 489-49-6 , 11H-Dibenzo[b,e][1,4]dioxepin-7-carboxylicacid, 9-(ethoxymethyl)-4-formyl-3,8-dihydroxy-1,6-dimethyl-11-oxo-

  • Name: 11H-Dibenzo[b,e][1,4]dioxepin-7-carboxylicacid, 9-(ethoxymethyl)-4-formyl-3,8-dihydroxy-1,6-dimethyl-11-oxo-
  • Synonyms: 11H-Dibenzo[b,e][1,4]dioxepin-7-carboxylicacid, 9-(ethoxymethyl)-4-formyl-3,8-dihydroxy-1,6-dimethyl-11-oxo-; Cetraric acid;Cetrarin;Isophthalaldehydicacid, 2-[(3-carboxy-a5-ethoxy-4,6-dihydroxy-2,5-xylyl)oxy]-4-hydroxy-6-methyl-, e-lactone (7CI); Stictin;
  • CAS Registry Number:
  • Flash Point: 235.4°C
  • Boiling Point: 657.9°Cat760mmHg
  • Density: 1.48g/cm3
  • Refractive index: 1.658
  • Flash Point: 235.4°C
  • EINECS: 207-697-2
  • Molecular Weight: 402.35152
  • InChI: InChI=1/C20H18O9/c1-4-27-7-11-15(23)14(19(24)25)9(3)16-18(11)29-20(26)13-8(2)5-12(22)10(6-21)17(13)28-16/h5-6,22-23H,4,7H2,1-3H3,(H,24,25)
  • Molecular Formula: C20H18 O9
  • Molecular Structure:CAS No:489-49-6 11H-Dibenzo[b,e][1,4]dioxepin-7-carboxylicacid, 9-(ethoxymethyl)-4-formyl-3,8-dihydroxy-1,6-dimethyl-11-oxo-

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489-49-6 9-ethoxymethyl-4-formyl-3,8-dihydroxy-1,6-dimethyl-11-oxodibenzo[b,e][1,4]dioxepin-7-carboxylic acid

  • 9-ethoxymethyl-4-formyl-3,8-dihydroxy-1,6-dimethyl-11-oxodibenzo[b,e][1,4]dioxepin-7-carboxylic acid
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489-49-6 9-ETHOXYMETHYL-4-FORMYL-3,8-DIHYDROXY-1,6-DIMETHYL-11-OXODIBENZO[B,E][1,4]DIOXEPIN-7-CARBOXYLIC ACID

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References of 11H-Dibenzo[b,e][1,4]dioxepin-7-carboxylicacid, 9-(ethoxymethyl)-4-formyl-3,8-dihydroxy-1,6-dimethyl-11-oxo-
Title: Cetraric Acid
CAS Registry Number: 489-49-6
CAS Name: 9-(Ethoxymethyl)-4-formyl-3,8-dihydroxy-1,6-dimethyl-11-oxo-11H-dibenzo[b,e][1,4]dioxepin-7-carboxylic acid
Synonyms: cetrarin
Molecular Formula: C20H18O9
Molecular Weight: 402.35
Percent Composition: C 59.70%, H 4.51%, O 35.79%
Literature References: From Iceland moss, Cetraria islandica (L.) Ach., Parmeliaceae. Isoln: Schnedermann, Knopp, Ann. 55, 144 (1845). Structure: Asahina, Asano, Ber. 66, 893 (1933).
Properties: Very bitter prisms from alcohol or acetic acid. Bitterness threshold 1:50,000. Practically insol in hot water, petr ether, benzene, ether, or in cold methanol, alc, acetone and acetic acid. Sol in aq solns of alkalies or their carbonates forming a yellow soln that turns brown on standing.
 
 
Status: This monograph has been retired and is no longer subject to revision or update.