Abstract − Analytical Sciences, 19(4), 647 (2003).
Crystal Structure of 7,8-Dihydroxy-4-methylcoumarin
Hiromasa KUROSAKI,* Rakesh K. SHARMA,** Masami OTSUKA,*** and Masafumi GOTO*
*Faculty of Pharmaceutical Sciences, Kumamoto University, Oe-honmachi 5-1, Kumamoto 862-0973, Japan
**Department of Chemistry, University of Delhi, Delhi-7, India
***Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe-honmachi 5-1, Kumamoto 862-0973, Japan
**Department of Chemistry, University of Delhi, Delhi-7, India
***Graduate School of Pharmaceutical Sciences, Kumamoto University, Oe-honmachi 5-1, Kumamoto 862-0973, Japan
The structure of 7,8-dihydroxy-4-methylcoumarin was determined by an X-ray diffraction method. The compound crystallized in the triclinic space group P1, Z = 2, with a = 7.631(2), b = 9.456(5), c = 7.075(3)197, α= 103.13(3), β= 91.84(3), γ= 68.21(3)°, and V = 460.9(3)Å3. The X-ray crystal structure was also compared with those of 5,7-dihydroxy-4-methylcoumarin and 7-hydroxy-4-methylcoumarin.
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