Cymoxanil-d3 (methoxy-d3)

Cymoxanil-d₃ is intended for use as an internal standard for the quantification of cymoxanil by GC- or LC-MS. Cymoxanil is a cyanoacetamide fungicide. It inhibits the mycelial growth of 12 isolates of P. infestans with EC₅₀ values of 0.27-0.57 μg/ml. Cymoxanil (5-100 mg/L) inhibits the growth of several strains of S. cerevisiae (IC₅₀s = 8-25 mg/L) but not S. pombe, K. marxianus, P. anomala, or C. utilis. A spray application of cymoxanil (1 mg/ml) one day after inoculation of potato leaves with P. infestans and cucumber leaves with P. cubensis reduces blighted leaves by 79 and 60%, respectively. It is toxic to rats with an acute LD₅₀ value of 3.8 mmol/kg. Formulations containing cymoxanil have been used to prevent fungal growth on crops and treat late potato blight in agriculture.

Cymoxanil-d3 (methoxy-d3) (CAS# 2140803-92-3) is a useful isotopically labeled research compound of Cymoxanil(C988995). Cymoxanil is a fungicide applied as a seed treatment or as a foliar application to the plants to control late blight.

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