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Erythrina variegata  ( E. variegata ) bioactive chemical has been the potential to be utilized as a good, eco-friendly approach for the control of mosquito population. In the present investigation, methanol extract using insecticidal compounds isolated against mosquito larvae kill assay was carried out. Secondary metabolism was characterized by thin layer chromatography, column chromatography, Fourier transform-infrared spectroscopy, gas chromatography-mass spectral, and identification of compound. Mosquito immature third instar larval,  Anopheles stephensi,  and  Culex quinquefasciatus  have been exposed to different concentrations of 50-250  µ g/ml. Totally, larvae were death rate 98.2% (significant value 0.001 b ) from methanol extract and it is significant toxicity against larvae of  An. stephensi  and  Cx. quinquefasciatus  with LC 50 /LC 99  values were 157.69/339.55  µ g/ml and 137.67/297.33  µ g/ml, respectively. FT-IR analysis in the functional groups such as alcohol, amines, amides, alkenes, 1 ⁎  amines, aromatic amines, aliphatic amines, 1 ⁎ ,2 ⁎  amines, and alkyl halides searched the identity of secondary metabolites, which may act as 12-Octadecenoic acid, methyl ester compound and clearly indicates being phytochemical. Chemical constituents of twenty-five compounds were identified in the methanol extract. The major components were 12-Octadecenoic acid and methyl ester (37.31%). Compound molecules consist of carbon 19 atoms (gray), hydrogen 36 atoms (greenish blue), and oxygen 2 atoms (red), indicated by the different colors. The results were obtained suggesting that, in addition to their pharmaceutical and medicine sources, 12-Octadecenoic acid, methyl ester compound can also serve as a natural mosquito control.

Phytochemical Profiling and Larval Control of Erythrina variegata Methanol Fraction against Malarial and Filarial Vector