Methylthiophanate

Methylthiophanate is an alternative name for thiophanate-methyl, a systemic benzimidazole fungicide used against a broad spectrum of fungal diseases in fruits, vegetables, cereals, and turf. Absorbed by the plant and translocated in its tissues, it converts to the active compound carbendazim, which disrupts fungal cell division. Because residues can persist in harvested produce, regulators set maximum residue limits and pre-harvest intervals for each crop, and its use has been restricted in some regions over toxicological concerns. Food-safety laboratories routinely include it in multi-residue fungicide screens of produce, quantifying it alongside its carbendazim metabolite to assess total exposure.