Diamond Shamrock Corporation

James A Scozzie

Larry J Powers

Robert E Moser

Zaven S Ariyan

Russell Buchman

William J Pyne

Henry Bluestone

Joseph A Ignatoski

Compounds of the formula ##STR1## are useful antihypertensive agents.

Antihypertensive pyridazin(2H)-3-ones

Compositions containing an .alpha.-chloroacetanilide compound of the formula ##SPC1## Wherein R.sup.1 is selected from the group consisting of primary and secondary alkyl radicals of 1-3 carbon atoms and R.sup.2 is selected from the group consisting of hydrogen and primary and secondary alkyl radicals of 2-3 carbon atoms, are useful for protecting various agronomic crops from undesirable weed infestation. Presently preferred because of their optimum selective herbicidal activity are those compounds wherein R.sup.1 of the above structure is either methyl or ethyl and R.sup.2 is ethyl.

.alpha.-Chloroacetanilide selective herbicides

A series of 2-chloro-N-(cyanomethyl)acetanilide compounds are active as selective herbicides for protecting certain crops against infestation by undesirable grasses.

2-Chloro-N-(cyanomethyl)acetanilides

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Wickliffe, OH, United States of America

James A Scozzie