Epiquinine is a stereoisomer of quinine, antimalarial alkoloid from the bark of a cinchona tree. Quinine was over 100 times more active than epiquinine against chloroquine-sensitive Plasmodium falciparum and over 10 times more active against chloroquine-resistant P. falciparum. Intra-erythrocytically active anti-malarial quinine acts by binding to haematin, blocking beta-haematin formation (while the anti-malarially inactive epiquinine had no effect on the reaction, however as quinine epiquinine was reported to bind ferriprotoporphyrin IX) and leaving toxic haematin in the parasite food vacuoles. Distinguishing features of the weakly active epiquinine include a higher dipole moment, a different direction of the electric field, a greater intrinsic nucleophilicity, lower acidity of the hydroxyl proton, a lesser electron affinity of the lowest unoccupied molecular orbitals, and a higher proton affinity than the active cinchona alkaloids. Epiquinine has little inhibitory effect toward peroxidative destruction of haem.

The histone deacetylases (HDACs), Sirtuin 1 (Sirt1) and Sirt2, play crucial roles in many biological processes, including cell proliferation, differentiation, and apoptosis. AGK2 is a cell-permeable, selective inhibitor of sirtuin 2 (SIRT2), which as was shown, prevented cellular α-tubulin deacetylation in HeLa cells in a dose-dependent manner and with little cytotoxic effect. AGK2 can be a useful tool for studying the roles of SIRT2 in neurodegeneration and aging, as well as cell cycle progression and tumorigenesis.

Clioquinol Sulfate is a mammalian metabolite of Clioquinol.

Phenanthridinone, an isoquinoline derivative, is a potent poly(ADP-ribose)polymerase 1 inhibitor. It could be considered as a potent immunomodulator, and also as the prototype of a new class of adjuncts in cancer chemotherapy.

The compound is an impurity of ritonavir, a selective HIV protease inhibitor.

O-(2-chloro-4-nitrophenyl)-O-isopropyl ethylphosphonothioate (also known as Stauffer N-2404) is an organophosphorus larvicide, which is toxic to mammalian.

NIDA-41020 is a functional CB1 cannabinoid receptor antagonist.

Roccellic acid is a species of fat acid extracted from Roccella phycopsis. Roccellic acid is insoluble in dilute mineral acids, but soluble in alkalies. Roccellic acid has marked antibacterial activity against the oral bacteria, S. gordonii, and P. gingivalis.

(+)-Rotigotine is the inactive enantiomer of dopamine receptor agonist (-)-Rotigotine. (+)-Rotigotine is weak agonist of dopamine receptor.

Zinc chlorate is an inorganic chemical compound used as an oxidizing agent in explosives. It is also a a powerful herbicide. Zinc chlorate combines the herbicidal effects of both sodium and chlorate and zinc chloride. Chipman has patented zinc chlorate as a weed killer.