Structural Formula Vector Image
Title: Visnagin
CAS Registry Number: 82-57-5
CAS Name: 4-Methoxy-7-methyl-5H-furo[3,2-g][1]benzopyran-5-one
Additional Names: 5-methoxy-2-methylfuranochromone
Molecular Formula: C13H10O4
Molecular Weight: 230.22
Percent Composition: C 67.82%, H 4.38%, O 27.80%
Literature References: Spasmolytic constituent of Ammi visnaga Lam., Umbelliferae. One of the active principles in the Egyptian traditional medicine known as "khella" that is used as a diuretic and vasodilator. See also: visnadine, khellin. Isoln and structure: Späth, Gruber, Ber. 74, 1492 (1941). Synthesis: Aneja et al., Tetrahedron 3, 230 (1958); Badawi, Fayez, Tetrahedron Lett. 1967, 1029. HPLC determn in A. visnaga fruit: M. M. El-Domiaty, J. Pharm. Sci. 81, 475 (1992).
Properties: Thread-like needles from water. mp 142-145°. Very slightly sol in water; sparingly sol in alc; freely sol in chloroform.
Melting point: mp 142-145°

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