| abstract |
A pyridine derivative of the formula: wherein R1 and R2 which may be the same or different are each alkyl having 8 to 14 carbon atoms, n-undec-10-yl, 2-nhexyloxyethyl, 2-(2-butoxyethoxy)-ethyl,3,4-dichlorophenyl, 4chlorobenzyl, 2,4-dichlorobenzyl or 2-naphthylmethyl; A1 and A2 are each a direct linkage or a linking group of the formula CH2CO.NH-wherein the methylene is joined to the pyridine nitrogen; (X1.X2)2 represents two monoanions or a dianion selected from the group consisting of two halide, methanesulphonate, toluene-p-sulphonate or acetate ions or the sulphate dianion; and A3 is a linking group of the formula: NH.CO(CH2OCH2)2 CO.NH- . A process for making these salts, compositions containing them and methods of precenting the growth of, or killing, bacteria by applying one of these salts to a bacterially infected environment are also disclosed. |