Diamond Shamrock Corporation

Diamond Shamrock Chemicals Company

Sds Biotech Corporation

William J Pyne

Larry J Powers

Robert E Moser

Robert E Holm

Zaven S Ariyan

Russell Buchman

Han San Ku

James A Scozzie

In-Kook Chang

Florian Knotz

John Lowbridge

Novel compounds of the general formula ##STR1## as well as novel compositions thereof and methods of using same are described. These compounds have been found to be valuable for controlling, modifying and inhibiting the growth of plants.

Herbicidal and plant growth regulant diphenylpyridazinones

A series of ester and salt derivatives of fluorene-9-carboxylic acid and fluorene-1-carboxylic acid exhibit significant plant growth regulating properties, useful in controlling the size, shape, dormancy time, flowering time and/or fruit setting of plants, depending upon the concentrations used. They may also be used to control the growth rate, texture and color of turf grass. Presently preferred compounds include the cis-2,5-dimethylpyrrolidine salt of 1-fluorenecarboxylic acid, 9-cis-2,5-dimethyl-1-pyrrolidinyl-2-chlorofluorene-9-carboxylic acid, methyl ester, the 2,6-dimethylpiperidine salt of 1-fluorenecarboxylic acid, and the cis-2,5-dimethylpyrrolidine salt of 9-hydroxyfluorene-9-carboxylic acid.

Fluorenecarboxylic acid derivatives

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

Antihypertensive pyridazin(2H)-3-ones

Growing community of inventors

Painesville, OH, United States of America

William J Pyne