Title: Porphyrillic Acid
CAS Registry Number: 129-65-7
CAS Name: 1,3-Dihydro-4,10-dihydroxy-8-methyl-3-oxoisobenzofuro[5,4-b]benzofuran-7-carboxylic acid
Additional Names: 1,7-dihydroxy-9-hydroxymethyl-3-methyl-4,8-dibenzofurandicarboxylic acid (8,9)-g-lactone
Molecular Formula: C16H10O7
Molecular Weight: 314.25
Percent Composition: C 61.15%, H 3.21%, O 35.64%
Literature References: Constituent of lichens. Isoln from Haematomma coccineum Dicks., Lecanoreae, and structure studies: Wachtmeister, Acta Chem. Scand. 8, 1433 (1954); 10, 1404 (1956).
Properties: Needles from ethanol or dioxane, mp 280-283° (dec) after darkening from 270°. Soluble in concd sulfuric acid, sodium carbonate, sodium hydroxide; sparingly sol in sodium bicarbonate.
Melting point: mp 280-283° (dec) after darkening from 270°
Status: This monograph has been retired and is no longer subject to revision or update. |