Table III.

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

Compound	2	3	4	5	R	Root Inhibition	Binding Assay
Compound	2	3	4	5	R	EC50	IC50
						μm
Chlorbufam	H	Cl	H	H	-CH(CH₃)CCH	1.18	18.6
Chlorpropham	H	Cl	H	H	-isopropyl	0.75	29.8
A	H	Cl	H	H	-CH₂CCCH₂CH₃	0.99	39.2
Barban	H	Cl	H	H	-CH₂CCCH₂Cl	1.04	47.9
B	H	Cl	H	Cl	-isopropyl	14.4	81.8
C	H	Cl	Cl	H	-isopropyl	117.1	116
D	H	Cl	H	Cl	-CH₃	34.5	199
E	Cl	Cl	H	H	-isopropyl	>200	>200
F	Cl	H	Cl	Cl	-isopropyl	>200	>200
G	H	Cl	CH3	H	-ispropyl	>200	>200