Reference

Insecticides for pesticide-resistant green rice leaf hoppers

Insecticides for pesticide-resistant green rice leaf hoppers. Yamamoto, Izuru; Fukada, Minoru; Harada, Tatsuo; Takahashi, Yoji; Kyomura, Nobuo (Nihon Nohyaku Co., Ltd., Japan). Japan. Kokai JP 51123822 28 Oct 1976 Showa, 6 pp. 3766-81-2 and 2425-10-7 are cas registry numbers. These chemicals are also mentioned in this article. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: A01N009-20. APPLICATION: JP 75-47486 21 Apr 1975. DOCUMENT TYPE: Patent CA Section: 5 (Agrochemicals) Section cross-reference(s): 27 The carbamates I (R = Et, Pr, Bu, or allyl) alone or in combination with methylcarbamic acid [6414-57-9] are effective against Nephotettix cineticeps. For example, 2,3-dihydro-2,2-dimethyl-7-benzofuranyl propylcarbamate (II) [62204-89-1] was prepd. by reaction of Pr isocyanate [110-78-1] with 7-hydroxy-2,2-dimethyl-2,3-dihydrobenzofuran [1563-38-8]. Similarly, 3 other I are prepd. The LD50 of II for N. cincticeps was 15.3 .mu.g/g. The LD50 values of I in combination with 10 methylcarbamates such as 2-isopropylphenyl methylcarbamate [2631-40-5] are presented. .

Inhibition of enzymic oxidation of indole-3-acetic acid by metabolites of the insecticide carbofuran

Inhibition of enzymic oxidation of indole-3-acetic acid by metabolites of the insecticide carbofuran.Some chemicals with cas registry numbers like 16655-82-6 and 16709-30-1 are also used. Lee, T. T.; Chapman, R. A. (Res. Inst., Agric. Canada, London, Ont., Can.). Phytochemistry, 16(1), 35-9 (English) 1977. CODEN: PYTCAS. DOCUMENT TYPE: Journal CA Section: 4 (Toxicology) Section cross-reference(s): 5 Metabolites of carbofuran [1563-66-2], a carbamate insecticide, inhibited the enzymic oxidn. of indole-3-acetic acid (I) [87-51-4]. The metabolites differed in stability and effectiveness. 2,2-Dimethyl-7-hydroxy-2,3-dihydrobenzofuran [1563-38-8] represented 1 type which was broken down in the I oxidn. reaction; thus the induced inhibition was limited by depletion of the inhibitor. 2,2-Dimethyl-3-keto-7-hydroxy-2,3-dihydrobenzofuran [17781-16-7] represented the other type which was stable in the reaction; thus the inhibition was persistent. With both types of inhibitors the inhibition was reversible by higher substrate concns., but the Lineweaver-Burk plot was curvilinear suggesting the complex nature of competitive inhibition. .