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. 2016 Sep 19;6:33302. doi: 10.1038/srep33302

Table 1. Central and peripheral CB1 receptor human isoforms differ in affinity for cannabinoid receptor inverse agonists.

Ligand Receptor Isoform
CB1 (nM) CB1b (nM)
Rimonabant 2.30 ± 0.69 7.65 ± 3.79
(R2 = 0.973) (R2 = 0.984)
JD-5037 8.16 ± 1.51 0.24 ± 0.12
(R2 = 0.994) (R2 = 0.824)

The Ki of rimonabant and JD-5037 for the CB1 and CB1b receptors as determined on the CHO-CB1 and CHO-CB1b open tubular columns, respectively, using frontal affinity chromatographic techniques.