Abstract: Compounds of the formula ##STR1## wherein: R.sub.1 is alkyl, alkoxy, hydroxy, cycloalkyl, hydroxyalkyl, alkoxyalkyl or hydroxyalkoxy;Y is alkylene of 3 to 9 carbon atoms,R.sub.2 and R.sub.3 independently are hydrogen, alkyl, alkoxy, halo, trifluoromethyl and nitro;R.sub.4 is alkoxy, hydroxy, halomethyl, dihalomethyl, trihalomethyl, cycloalkyl, alkoxycarbonyl, hydroxyalkyl, alkoxyalkyl, alkanecarbonyloxyalkyl, cyano, 2,2,2-trifluoroethyl, (4-methylphenyl)sulfonyloxymethyl, N.dbd.Q or CON.dbd.Q, where N.dbd.Q is amino, alkylamino or dialkylamino; or pharmaceutically acceptable acid-addition salts thereof are useful as antiviral agents.

Abstract: A lactose-hydrolyzed fluid milk comprising fluid milk, the normal lactose content of which has been reduced by at least about 70% by lactase hydrolysis, having incorporated therein from about 0.01 to about 0.15% by weight of potassium chloride, a process for its preparation and a method of suppressing perceived sweetness of lactose-hydrolyzed milk by incorporating therein potassium chloride.