Cyclobutanecarboxylic acid, 1-[4-(difluoromethoxy)phenyl]-3,3-difluoro-

1-(4-Methoxyphenyl)-3-oxocyclobutanecarboxylic Acid Methyl 1-(4-broMophenyl)-3-oxocyclobutanecarboxylate Cyclobutanecarboxylic acid, 3,3-difluoro-1-(2-fluorophenyl)- Cyclobutanecarboxylic acid, 1-(4-aminophenyl)-3,3-difluoro-, methyl ester Cyclobutanecarboxylic acid, 1-(4-aminophenyl)-3,3-difluoro-

Cyclobutanecarboxylic acid, 1-(2-cyanophenyl)-3,3-difluoro- Cyclobutanecarboxylic acid, 1-(3-bromophenyl)-3,3-difluoro-, methyl ester Cyclobutanecarboxylic acid, 1-(4-cyanophenyl)-3,3-difluoro- Cyclobutanecarboxylic acid, 3,3-difluoro-1-(4-methoxyphenyl)- Cyclobutanecarboxylic acid, 3,3-difluoro-1-(3-fluorophenyl)-

Cyclobutanecarboxylic acid, 1-(4-bromophenyl)-3,3-difluoro- Cyclobutanecarboxylic acid, 3,3-difluoro-1-(4-fluorophenyl)- 3,3-difluoro-1-phenylcyclobutane-1-carboxylic Acid Cyclobutanecarboxylic acid, 1-(3-chlorophenyl)-3,3-difluoro- Cyclobutanecarboxylic acid, 1-(2-chlorophenyl)-3,3-difluoro-

Cyclobutanecarboxylic acid, 1-(2-bromophenyl)-3,3-difluoro- Cyclobutanecarboxylic acid, 1-(4-bromophenyl)-3,3-difluoro-, methyl ester Cyclobutanecarboxylic acid, 1-(3-bromophenyl)-3,3-difluoro-