Avermectin B1a

Research use only, not for human use.

Avermectin B1a is a macrocyclic lactone disaccharide anthelmintic agent .

Avermectin B1a is a macrocyclic lactone disaccharide anthelmintic agent .

[3H]AVM B1a preferentially binds to synaptic membranes from several regions of rat brain. [3H]AVM B1a specific binding to intact monolayers of granule cells increases rapidly with time of incubation and reaches equilibrium after approximately 20 min at 24°C. Higher concentrations of [3H]AVM B1a leads to markedly greater nonspecific binding, 60% at 25 nM. Various AVM analogs also produce concentration-dependent inhibition of [3H]AVM B1a binding in intact cerebellar neurons. AVM B1a and moxidectin are similar in potency (IC50 values, 120 and 126 nM, respectively). AVMB1a-stimulated chloride efflux from mouse brain synaptic vesicles results from the activation of GABA-insensitive chloride channels and that this action is distinct from their previously documented effects on GABA-gated chloride channels in mouse brain preparations.

Bacteria are significantly inhibited when the AVM B1a concentration is higher than 83.3 mg/kg, while fungi are less impaired in soil. Soil respiration is also inhibited by high concentration AVM B1a, which differs with soil types. The half lethal dosage (LD50) of AVM B1a to soil earthworm is estimated as 4.63 mg × cm2 in filter paper contact test, and as 24.13 and 17.06 mg/kg, respectively after treated 7 and 14 days in artificial soil. Iin artificial soil, the LC50 of AVM B1a on earthworms are 24.1 mg/kg and 17.1 mg/kg, respectively, for 7 and 14 days. About 80.0% and 94.8% of the accumulated AVM B1a are eliminated respectively in two groups within 1 day after they are exposed to AVM B1a-free soil, but a trace amount of AVM B1a is found for a relative long time in earthworms.

Abamectin B1a | Avamectin B1a

Microbiology/Virology

Parasite

Parasite

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65195-55-3

873.08

C48H72O14

>98% (HPLC)

DMSO:100 mg/mL (114.54 mM)

CCC(C)C1OC2(C=CC1C)CC1CC(C/C=C(\C)C(OC3CC(OC)C(OC4CC(OC)C(O)C(C)O4)C(C)O3)C(C)/C=C/C=C3\COC4C(O)C(C)=CC(C(=O)O1)C34O)O2

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(-20℃)

With Ice Pack

≥ 2 years