(Des-Bromo)-Neuropeptide B (1-23) (human), a neuropeptide B derivative, inhibits forskolin-induced cAMP production to a similar degree as neuropeptide B (human) in CHO-cells expressing bovine or human G-protein-coupled receptor GPR7, with IC50s of 3.5 and 0.58 nM for bovine and human GPR7, respectively.