High efficacy of (Z)-纬-bisabolene from the essential oil of Galinsoga parviflora (Asteraceae) as larvicide and oviposition deterrent against six mosquito vectors was written by Govindarajan, Marimuthu;Vaseeharan, Baskaralingam;Alharbi, Naiyf S.;Kadaikunnan, Shine;Khaled, Jamal M.;Al-Anbr, Mohammed N.;Alyahya, Sami A.;Maggi, Filippo;Benelli, Giovanni. And the article was included in Environmental Science and Pollution Research in 2018.Reference of 106-73-0 The following contents are mentioned in the article:
The eco-friendly management of mosquitoes with novel and effective larvicides and oviposition deterrents is a crucial challenge to prevent outbreaks of mosquito-borne diseases. However, most of the herbal formulations tested in these years showed LC50 values higher of 40 ppm, and significant oviposition deterrent activity only when tested at relatively higher doses (> 50 渭g/mL). Herein, we studied the chem. composition of the Galinsoga parviflora essential oil (EO). This plant is an annual herb native to South America naturalized all over the world. We tested the EO larvicidal and oviposition deterrent action on 6 mosquito species. Totally 37 compounds were identified in the EO of G. parviflora by GC and GC-MS analyses. The major constituent was (Z)-纬-bisabolene (38.9%). The G. parviflora EO and (Z)-纬-bisabolene showed acute toxicity on An. stephensi (LC50 = 31.04 and 2.04 渭g/mL, resp.), Ae. aegypti (LC50 = 34.22 and 2.26 渭g/mL, resp.), Cx. quinquefasciatus (LC50 = 37.10 and 2.47 渭g/mL, resp.), An. subpictus (LC50 = 40.97 and 4.09 渭g/mL, resp.), Ae. albopictus (LC50 = 45.55 and 4.50 渭g/mL, resp.) and Cx. tritaeniorhynchus (LC50 = 49.56 and 4.87 渭g/mL, resp.) larvae. Furthermore, the oviposition deterrent potential of the G. parviflora EO and (Z)-纬-bisabolene was studied on six mosquito vectors, showing that 25 渭g/mL of (Z)-纬-bisabolene led to an Oviposition Activity Index lower of – 0.79 in all tested mosquito vectors. Overall, all larvicidal LC50 values estimated for (Z)-纬-bisabolene were lower than 5 渭g/mL. This result far encompasses current evidences of toxicity reported for the large majority of botanical products currently tested against mosquito young instars, allowing us to propose this compound as an highly effective mosquito larvicide and oviposition deterrent. This study involved multiple reactions and reactants, such as Methyl heptanoate (cas: 106-73-0Reference of 106-73-0).
Methyl heptanoate (cas: 106-73-0) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits, including apples, durians, pears, bananas, pineapples, and strawberries. Acyl chlorides and acid anhydrides alcoholysis is another way to produce esters. Acyl chlorides and acid anhydrides react with alcohols to produce esters. Anydrous conditions are recommended since both acyl chlorides and acid anhydrides react with water.Reference of 106-73-0
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Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics