Fludioxonil , its CAS NO. is 131341-86-1, the synonyms are 4-(2,2-Difluoro-1,3-benzodioxol-4-yl)-1H-pyrrole-3- carbonitrile ; 1H-Pyrrole-3-carbonitrile, 4-(2,2-difluoro-1,3-benzodioxol-4-yl)- .