Reference

Studies on the toxic, repellent and attractant properties of certain insecticides towards the housefly, Musca domestica nebulo (L

Studies on the toxic, repellent and attractant properties of certain insecticides towards the housefly, Musca domestica nebulo (L.). Rani, P. Usha; Osmani, Z. (Div. Entomol. Toxicol., Reg. Res. Lab., Hyderabad 500 009, India). Int. Pest Control, 26(3), 72-4, 76-7 (English) 1984. CODEN: IPCLBZ. ISSN: 0020-8256. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) In lab. expts., methoxychlor [72-43-5] (1-4%), dimethoate [60-51-5] (0.1-1), allethrin [584-79-2] (0.00005-0.005), fenvalerate [51630-58-1] (0.0001-0.01), and cyphenothrin [39515-40-7] (0.005-0.05) were repellents to M. domestica nebulo. Methoxychlor 0.0001-0.1% and cyphenothrin 0.00025-0.001 were attractants. Males were more responsive to the repellents than females. Dimethoate showed the highest toxicity, and methoxychlor the lowest.

Conformational behavior and thermodynamic properties of phenothrin analog insecticides

Conformational behavior and thermodynamic properties of phenothrin analog insecticides. Hopfinger, Anton J.; Malhotra, Deepak; Battershell, Robert D.; Ho, Andrew W. (Case Inst. Technol., Case West. Reserve Univ., Cleveland, OH 44106, USA). Nippon Noyaku Gakkaishi, 9(4), 631-41 (English) 1984. CODEN: NNGADV. ISSN: 0385-1559. DOCUMENT TYPE: Journal CA Section: 5 (Agrochemical Bioregulators) Section cross-reference(s): 22 A combined conformational and linear free energy anal., using substituent partition coeffs., was made for 3-phenoxybenzyl esters of several cyclopropanecarboxylic and several phenylacetic acid pyrethroid insecticides, I [X = H, Me, vinyl, CN, Ac, CO2Me, CH2SMe, CH2OMe, CH2Cl CH(OMe)2, CYCH]. Each mol. was divided into 3 structural segments contg. 2 torsional degrees of freedom, plus those bond rotations inherent to a substituent. Each segment was analyzed sep. The acyl-contg. moiety and the substituted Ph rings of the phenoxybenzyl group were conformationally rigid. These segments were frozen into their resp. unique conformers. The conformational behavior of the -O-CH(X)- portion of the esters was analyzed and a structure-activity model based upon conformation and lipophilicity was established. In the proposed active conformation, the substituted vinyl group is in close proximity to the terminal benzene ring of the 3-phenoxybenzyl group. This folded conformation is also calcd. 39515-40-7 is the cas registry number of certain chemical which is used as reagents here.Some chemicals with cas registry numbers like 39515-40-7 are also used. to be a min. energy state for fenvalerate. Fluorescence spectroscopy indicates that this conformation is adopted in dil. trifluoroethanol solns. by a fenvalerate congener. However, the crystal conformation of a a-cyano-3-phenoxybenzyl 2,2-dimethyl-3-(2-methyl-1-propenyl)cyclopropanecarboxylate [39515-40-7] does not correlate, or relate, to changes in biol. potency. The relative lipophilicity, as measured by the calcd. X substituent water/octanol partition coeff., D log P, indicates activity is maximized for a substituent D log P in the range -0.5 to -1.5. ..