Title:  Perezone 
CAS Registry Number:  3600-95-1 
CAS Name:  2-[(1R)-1,5-Dimethyl-4-hexenyl]-3-hydroxy-5-methyl-2,5-cyclohexadiene-1,4-dione 
Additional Names:  2-(1,5-dimethyl-4-hexenyl)-3-hydroxy-5-methyl-p-benzoquinone;  pipitzahoic acid 
Molecular Formula:  C15H20O3 
Molecular Weight:  248.32 
Percent Composition:  C 72.55%, H 8.12%, O 19.33% 
Literature References:  From roots of Trixis pipitzahuac Shaffner (Perezia adnata Gr., Compositae):  Weld, Ann. 95, 188 (1855); from roots of Radix pereziae:  Mylius, Ber. 18, 463, 480, 937 (1885); Anschütz, Ber. 18, 709 (1885); Fichter et al., Ann. 395, 1, 15 (1913).  Structure:  Archer, Thomson, Chem. Commun. 1965, 354; Bates et al., Chem. Ind. (London) 1965, 1793. 
Properties:  Yellow plates from water or alcohol, mp 103-104°.  [a]D20 -17° (ether). 
Melting point:  mp 103-104° 
Optical Rotation:  [a]D20 -17° (ether)   |