Methomyl-d₃

Methomyl-d₃ is intended for use as an internal standard for the quantification of methomyl (Item No. 25610) by GC- or LC-MS. Methomyl is a carbamate insecticide and molluscicide.^1,2 It induces mortality of tobacco budworm larvae when applied at a concentration of 0.56 kg/ha and southern armyworm larvae at concentrations of 0.01 and 100 ppm.³ Methomyl is toxic to the land snail M. obstructa (LD₅₀ = 11.9 µg/snail).² It is also toxic to rats via oral but not dermal administration (LD₅₀s = 30 and >2,000 mg/kg, respectively).¹ Formulations containing methomyl have been used in the control of insects in agriculture.

WARNING This product is not for human or veterinary use.

1. Authority, E.F.S. Conclusion regarding the peer review of the pesticide risk assessment of the active substance methomyl. EFSA Scientific Report 222, 1-99 (2008).

2. Hussein, H.I., Al-Rajhy, D., El-Shahawi, F.I., et al. Molluscicidal activity of Pergularia tomentosa (L.), methomyl and methiocarb, against land snails. Int. J. Pest Mgt. 45(3), 211-213 (2010).

3. Wolfenbarger, D.A., and Redfern, R.E. Toxicity of five carbamate insecticides to the two-spotted spider mite and larvae of the southern armyworm and the tobacco budworm. J. Econ. Entomol. 61(2), 580-581 (1968).