Cathartus quadricollis

Keever, D.W. and Cline, L.D. 1983. Effect of light trap height and light source on the capture of Cathartus quadricollis (Guerin-Meneville)(Coleoptera Cucujidae) and Callosobruchus maculatus (F.)(Coleoptera Bruchidae) in a warehouse. J. Econ. Entomol 76, 1080-1082. 

The male-produced aggregation pheromone of the square-necked grain beetle, Cathartus quadricollis has been identified to be (3R,6 )-3-acetoxy-7-methylnon-6-ene 157 [297]. The compound, termed quadrilure, is attractive to both sexes, however, females are more sensitive at low concentrations. The (S)-enantiomer is biologically inactive. 

Pierce A. M., Pierce H. D., Jr, Johnston B. D., Oehlschlager A. C. and Borden J. H. (1988) Aggregation pheromone of square necked grain beetle, Cathartus quadricollis (GUER). J. Chem. Ecol. 14, 2169-2184. 

The procedure has been used in a variety of syntheses of natural products [143, 144] for example, in the synthesis of dihydroxyserrulatic acid (Scheme 2-50) [145], the aggregation pheromone of Cathartus quadricollis (quadrilure) [146], and aza-C-disaccharides [147]. 

C12H22O2, Mr 198.31, oil, bp. 63 -64°C (1.73 kPa) soluble in chloroform, peiitane +9.59° (CHCI3). An aggregation pheromone of the male com weevil Cathartus quadricollis, a major pest of stored grain crops throughout the world. 

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