Citromycetin
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
Additional Names: 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°.

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