4-Methoxybenzaldehyde

4-Methoxybenzaldehyde (p-anisaldehyde) is a fragrant phenolic compound. 4-Methoxybenzaldehyde has been found in many plant species including horseradish, anise, star anise. 4-Methoxybenzaldehyde is a possible neurotoxicant and it has shown effects that include mortality, attractancy, and interference with host seeking ^[1]. In Vitro: 4-Methoxybenzaldehyde (p-anisaldehyde) (0.00001%-0.00003%, 24 h) is lethal to horn fly eggs at concentrations of 0.00001%, and possibly less^[1].
4-Methoxybenzaldehyde (0.125%- 10%, 30 min-4 h) causes relatively high immobilization for the first hour and a decline by 2 h, reaching low levels at the 4 h sampling time at the 1, 1.5, 2, and 2.5% concentrations. Don’t induce immobilization at any of the five sampling times at the three low concentrations (0.125, 0.25, and 0.5%) and the three highest concentrations (5, 7.5, and 10%)^[1].
4-Methoxybenzaldehyde (0.125%- 10%, 30 min-4 h) causes mortality of 90–100% at each sampling time in the 5, 7.5, and 10% concentration treatments. 4-Methoxybenzaldehyde causes mortality of ≈69% (2 and 2.5%) and ≈30% (1 and 1.5%) by 4 h. 4-Methoxybenzaldehyde has no effect at any of the sampling times at the three lowest concentrations (0.125, 0.25, and 0.5%)^[1].
4-Methoxybenzaldehyde (1000-20000 ppm, 1 week) reduces horn fly larvae by 85.4%-100% when mixed into cow manure at 5000-20,000 ppm. 4-Methoxybenzaldehyde reduces pupation by 57.6 and 79.9% at the 1% and 5% concentrations, respectively. 4-Methoxybenzaldehyde doesn’t occur pupation in the 10, 25, and 50% concentration treatments^[1].
4-Methoxybenzaldehyde (0.075%- 1.5%, 30 min-4 h) achieves complete horn fly mortality by fumigation with 0.75% by 3 h in an enclosed space, and fumigation is more (≈12.5-fold) lethal to adult horn flies than sprayed droplets^[1].
4-Methoxybenzaldehyde (0.3%- 10%, 30 min-120 min) completely deters feeding from cotton pads soaked in bovine blood in response to concentrations of 0.6% and greater in ventilated containers^[1].
4-Methoxybenzaldehyde (0.06%- 1%, 40 h) doesn’t affect horn fly egg production and hatching with exposure to sublethal concentrations^[1].