Norketamine is one of the major metabolites of Ketamine, which is routinely used as an anesthetic. Norketamine is a potent antagonist of the N-methyl-D-aspartate receptor and is believed to contribute to the analgesic effects of ketamine. In animal models, norketamine has been noted to increase the glomerular filtration rate by remodeling the cellular cytoskeleton, and it has been identified as having possible antidepressant effects.

Pseudoyohimbine is an alkaloid isolated from the bark of Corynanthe johimbe and Rauwolfia canescens.

UCB35625 is a potential inhibitor of chemokine/eosinophil interactions. UCB35625 is a trans-isomer of a compound J113863, which was originally identified by scientists at Banyu Pharmaceutical Company as a candidate small molecule chemokine receptor antagonist. UCB35625 initially identified as CCR1 and CCR3 antagonists also bind to CCR2 and CCR5 and act as full agonist, partial agonist or antagonist according to the nature of the receptor and the signaling pathway investigated. UCB35625 shows promise as a lead compound for the design of future therapeutics, which may be of use in the treatment of allergic inflammatory diseases such as asthma and also the blockade of viral entry by HIV strains that utilize CCR3.