Widely distributed in nature; found in beer, coffee, cucumbers, watermelon, palm oil, potatoes, carrots etc. Prepn: R. Delaby, S. Guillot-Allègre, Bull. Soc. Chim. Fr. 53, 301 (1933); J. Braun et al., Ber. 67, 269 (1934); J. Ficini, H. Normant, Bull. Soc. Chim. Fr. 1964, 1294; J. Ficini et al., Tetrahedron Lett. 1977, 3589; M. Wado et al., Chem. Lett. 1977, 345. Insecticidal activity: P. M. Guerin, M. F. Ryan, Experientia 36, 1387 (1980). Cockroach repellant activity: T. H. Maugh, Science 218, 278 (1982).