Table 2: EC50 and Emax Values of Anandamide Analogues for Stimulating [35S]GTPγS Binding in Rat Microsomal Membranes a

CB1 Analogues EC50 (µM) Emax (%)
A 0.48 ± 0.03 112 ± 4.8
B 0.22 ± 0.07 121 ± 1.5
C 0.34 ± 0.08 133 ± 3.5
D 0.52 ± 0.05 108 ± 2.7
E 0.42 ± 0.03 103 ± 1.9
F 0.27 ± 0.04 127 ± 4.5
WIN 55,212-2 0.18 ± 0.09 144 ± 6.5
CP-55,940 0.10 ± 0.05 135 ± 9.0

a [35S]GTPγ-S binding assay was conducted using eight concentrations of each analogue being tested and two experiments run with four duplicates of each point.