Detail of "112-66-3"

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Laboratory evaluation of the sex pheromone and mating inhibitor of the red bollworm Diparopsis castanea Hampson (Lepidoptera, Noctuidae)

Laboratory evaluation of the sex pheromone and mating inhibitor of the red bollworm Diparopsis castanea Hampson (Lepidoptera, Noctuidae). Marks, R. J. (Makoka Res. Stn., Minist. Agric. Nat. Resour., Thondwe, Malawi). Bull. Entomol. Res., 66(3), 427-35 (English) 1976. CODEN: BEREA2. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemicals) The four components of the sex pheromone of D. castanea are dodecan-1-yl acetate (I) [112-66-3], trans-9-dodecen-1-yl acetate (II) [35148-19-7], 11-dodecen-1-yl acetate (III) [35153-10-7], and trans-9,11-dodecadien-1-yl acetate (IV) [50767-78-7].Several reagents with their cas registry numbers 50767-78-7 and 35153-10-7 are used here. Increasing the proportion of II in a I/II/III/IV mixt. progressively decreased male excitation; in the absence of I all concns. of II tested were equally inhibitory. The synthetic combination of 80% IV (93% trans:7% cis) and 20% III (dicastalure), was 485-fold more potent in eliciting male activity than a female sex pheromone gland ext. Redn. in male response to crude ext. occurred through exposure of males to glandular II and through reduced pheromone volatility caused by extd. triglycerides. Max. quantities of pheromone were detected in the female sex pheromone gland 6-12 h into scotophase and for .gtoreq.30 min into photophase. Greater bioassay responses were elicited by the optimal field combination of 80% IV and 20% III than for other ratios tested. Excitation and clasper extension were obsd. in response to the nonattractive III; this indicates a role in close-range mating behavior for this component. The threshold level of male response to sex pheromone occurred at an aerial concn. of 9.2 mols. IV/mm3/s. This suggests that aerial concns. of 102-103 times the male threshold response level may be sufficient to cause successful communication disruption in the field. .

Volatile constituents of Boronia megastigma flowers

Volatile constituents of Boronia megastigma flowers. Davies, N. W.; Menary, R. C. (Cent. Sci. Lab., Univ. Tasmania, Hobart, Australia). Perfum. Flavor., Volume Date 1983, 8(6), 3-8 (English) 1984. CODEN: PEFLDI. ISSN: 0361-8587. DOCUMENT TYPE: Journal CA Section: 62 (Essential Oils and Cosmetics) Section cross-reference(s): 11, 30 Concretes were prepd. from various clones of B. megastigma flowers by extn. with petroleum ether (b. 40-60°), and analyzed by gas chromatog.; >150 peaks were found, and more than half were identified. b-Ionone [79-77-6], dodecyl acetate [112-66-3], Me jasmonate [1211-29-6], and Z-8-heptadecene [16369-12-3] were relatively major components in all clones, as were C21-33 hydrocarbons. a-Pinene [80-56-8], b-pinene [127-91-3], and limonene [138-86-3] concns. varied widely. A new compd., sesquicineole (I) [90131-02-5], was found in some clones (19.3% in 1) but was absent from most; its structure was studied by mass spectrometry and hydrogenolysis.