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CAS No 478-60-4 , 4H,5H-Pyrano[3,2-c][1]benzopyran-10-carboxylicacid, 8,9-dihydroxy-2-methyl-4-oxo-

  • Name: 4H,5H-Pyrano[3,2-c][1]benzopyran-10-carboxylicacid, 8,9-dihydroxy-2-methyl-4-oxo-
  • Synonyms: NSC 53584;4H,5H-Pyrano[3,2-c][1]benzopyran-10-carboxylicacid, 8,9-dihydroxy-2-methyl-4-oxo-;Citromycetin;Frequentic acid;
  • CAS Registry Number:
  • Flash Point: 260.9°C
  • Boiling Point: 669.1°Cat760mmHg
  • Density: 1.73g/cm3
  • Refractive index: 1.736
  • Flash Point: 260.9°C
  • Molecular Weight: 0
  • InChI: InChI=1/C14H10O7/c1-5-2-7(15)6-4-20-9-3-8(16)12(17)11(14(18)19)10(9)13(6)21-5/h2-3,16-17H,4H2,1H3,(H,18,19)
  • Molecular Formula: C14H10 O7
  • Molecular Structure:CAS No:478-60-4 4H,5H-Pyrano[3,2-c][1]benzopyran-10-carboxylicacid, 8,9-dihydroxy-2-methyl-4-oxo-

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478-60-4 CITROMYCETIN

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478-60-4 Citromycetin

  • Citromycetin, Min 99%
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References of 4H,5H-Pyrano[3,2-c][1]benzopyran-10-carboxylicacid, 8,9-dihydroxy-2-methyl-4-oxo-
Title: Citromycetin
CAS Registry Number: 478-60-4
CAS Name: 8,9-Dihydroxy-2-methyl-4-oxo-4H,5H-pyrano[3,2-c][1]benzopyran-10-carboxylic acid
Synonyms: frequentic acid
Molecular Formula: C14H10O7
Molecular Weight: 290.23
Percent Composition: C 57.94%, H 3.47%, O 38.59%
Literature References: Antibiotic substance produced by Penicillium frequentans Westling and P. vesiculosum Bainier and by Citromyces spp: Hetherington, Raistrick, Philos. Trans. R. Soc. London Ser. B 220, 209 (1931); Grove, Brian, Nature 167, 995 (1951). Structure: Robertson et al., J. Chem. Soc. 1951, 2013. Biosynthesis: Birch et al., ibid. 1958, 4576; Money, Nature 199, 592 (1963). Total synthesis: M. Yamauchi et al., J. Chem. Soc. Perkin Trans. 1 1987, 395.
 
Derivative Type: Dihydrate
Properties: Yellow crystals, effervescence at 155°, dec 290-300° (considerable antecedent blackening). Freely sol in ethanol; readily sol in aq sodium carbonate soln; sparingly sol in water, chloroform. Insol in benzene, hexane. Stable to acid and alkali at 100°.