Author's Organization:National Institute of Hygienic Sciences, Osaka Branch Department of Pharmacy, Osaka University Hospital National Institute of Hygienic Sciences, Osaka Branch Faculty of Pharmaceutical Sciences, Kyushu University 62
Captan and difolatan, widely used fungicides, decomposed rapidly when irradiated with light of a low pressure mercurry lamp to cis-4-cyclohexene-1, 2-dicarboximide.