NTRC-824 is >150-fold selectivity for NTS2 over NTS1 (Ki >30 μM). NTRC-824 is an effective, selective, and neurotensin-like nonpeptide neurotensin receptor type 2 (NTS2) antagonist (IC50: 38 nM and a Ki : 202 nM).
PGN36 (Compound 18) is a potent and highly selective antagonist of the cannabinoid CB 2 receptor (CB 2 R). It exhibits exceptional affinity for CB 2 R, with a Ki value of 0.09 μM [1].