An attractant of the oriental fruit fly, Dacus dorsalis Hendel, present in the blossom of the golden shower, Cassia fistula L., was isolated by steam distillation, followed by extraction with chloroform, and purified by preparative gas chromatography. The compound was identified as methyleugenol by infrared and ultraviolet spectrophotometry.
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Kawano et al. (1968) studied this question.