Emamectin B1a  (Synonyms: L-656,748)

Emamectin B1a is a semisynthetic derivative of avermectin B1a. It binds to GABAA receptors (Ki=17.6 nM in rat brain membranes), including those containing β1, β2, or β3 subunits (IC₅₀s=57, 210, and 49.8 nM for α1β1γ2, α1β2γ2, and α1β3γ2 subunits, respectively), and potentiates the GABA response.2 Emamectin B1a also binds to and inhibits glycine receptors (IC₅₀=218 nM in rat spinal cord). Emamectin B1a induces mortality in 90% of S. exigua larvae in a diet incorporation assay at a dose of 1.067 ng/ml, which is approximately 1,500-fold more toxic than avermectin B1. It is effective against neonate S. eridania larvae in a foliage spray bioassay and when applied topically.

886.12

C₄₉H₇₅NO₁₃

121124-29-6

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Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. Dawson, et al. Anticonvulsant and adverse effects of avermectin analogs in mice are mediated through the g-aminobutyric acidA receptor. J. Pharmacol. Exp. Ther. 295(3), 1051-1060 (2000).