Dehydroergosterol acetate is ergosterol derivative that can be used in photochemical reactions.

Andrographic acid is isolated from Andrographis paniculata, a traditional Chinese medicine (TCM) that has been effectively used for treatment of infection, inflammation, cold, fever, and diarrhea in China.

(+)-octopamine is an enantiomer of octopamine, a naturally occurring phenolamine acting as a neurotransmitter in invertebrates. Octopamine is considered to be trace amine present in mammalian tissues at very low (nanomolar) concentrations. Generally, the (+)-enantiomers of octopamine are less active than the (-)-enantiomers at adrenergic receptors. However (+)-octopamine is more potent than the (-)-octopamine as an inhibitor of semicarbazide-sensitive amine oxidase.

(-)-octopamine is an enantiomer of octopamine, a naturally occurring phenolamine acting as a neurotransmitter in invertebrates. Octopamine is considered to be trace amine present in mammalian tissues at very low (nanomolar) concentrations. Generally, the (-)-enantiomers of octopamine are more active than the (+)-enantiomers at adrenergic receptors. However (+)-octopamine is more potent than the (-)-octopamine as an inhibitor of semicarbazide-sensitive amine oxidase.

Trans-1,8-terpin compound belongs to the class of organic compounds known as menthane monoterpenoids. 1,8-terpin exists in two geometrical isomeric forms: cis and trans. cis-1,8-terpin is the common form exerting expectorant properties. Pharmacological activity of trans isomer is not available.

A-740003 is a competitive antagonist of P2X purinoceptor 7 (P2X7) that has been shown to potently block proinflammatory cytokine interleukin-1β (IL-1β) release, and also is a promising candidate for the development of a radiotracer for imaging of neuroinflammation by positron emission tomography.

Valinomycin is an ionophore and acts by creating an influx of K+ ions in bacterial cells. It is an antibiotic substance with wide range of activity against different bacteria, fungies and virus-infected cells. Also it demonstrates insecticide and nematocide properties. Because of its toxicity to eukaryotic cells, valinomycin cannot be used in human therapy.

Isoquassin also known as picrasmin is the major component of plant extract, quassinoid derived from the wood of tropical tree Picrasma excelsa.

The (2S,3R) enantiomer in Voriconazole (V760000) drug substance

(R)-carvedilol, an enantiomer of the drug carvedilol, which is used in the treatment of mild to moderate congestive heart failure. (R)-carvedilol is an alpha adrenergic receptor blocker. It was shown, that (R)-carvedilol increased sympathetic tone, presumably as a physiological reaction to the decrease in blood pressure caused by alpha-blockade. The weak clinical net effect of beta-blockade of (R, S)-carvedilol at rest might be one reason why this drug causes fewer side effects than other beta-blockers, such as a reduction of nocturnal melatonin release.