Table II.

Inhibition of [³H]RH-4032 binding in tobacco suspension-cultured cells and inhibition of tobacco root elongation by various benzamides

Compound	3	5	R1	R2	Root Inhibition	Binding Assay
					EC50	IC50
					μm
1	Cl	Cl	CH3	C2H5	0.014	0.73
2	Br	CH3	CH3	C2H5	0.026	2.7
3	Cl	Cl	CH3	CH3	0.019	4.5
4	Cl	CH3	CH3	C2H5	0.037	7.4
5	F	CF3	CH3	C2H5	0.055	14.3
6	Cl	H	CH3	CH3	0.088	33.7
7	Cl	H	CH3	C2H5	0.089	64.0
8	Cl	CH2OCH3	CH3	C2H5	0.16	99.6
9	Cl	Cl	C2H5	C2H5	0.453	141.6