Oxiniacic Acid is a nicotinic acid derivative, that shows potent hypolipidemic activity.

Succinic acid is a dicarboxylic acid, which has multiple biological roles as a metabolic intermediate being converted into fumarate by the enzyme succinate dehydrogenase in complex 2 of the electron transport chain which is involved in making ATP, and as a signaling molecule reflecting the cellular metabolic state. Succinate is generated in mitochondria via the tricarboxylic acid cycle (TCA), an energy-yielding process shared by all organisms. Succinate can exit the mitochondrial matrix and function in the cytoplasm as well as the extracellular space, changing gene expression patterns, modulating epigenetic landscape or demonstrating hormone-like signaling. Dysregulation of succinate synthesis, and therefore ATP synthesis, happens in some genetic mitochondrial diseases, such as Leigh's disease, and Mela's disease and degradation can lead to pathological conditions, such as malignant transformation, inflammation and tissue injury. Succinic acid is a precursor to some polyesters and a component of some alkyd resins. Succinic acid also serves as the bases of certain biodegradable polymers, which are of interest in tissue engineering applications. As a food additive and dietary supplement, succinic acid is generally recognized as safe by the U.S. Food and Drug Administration. Succinic acid is used primarily as an acidity regulator in the food and beverage industry. It is also available as a flavoring agent, contributing a somewhat sour and astringent component to umami taste.[11] As an excipient in pharmaceutical products, it is also used to control acidity or as a counter ion. Drugs involving succinate include metoprolol succinate, sumatriptan succinate, Doxylamine succinate or solifenacin succinate.

Glucuronic acid is a sugar acid that was first identified in urine. It is an intermediate metabolite of the uronic acid pathway. Moreover, glucuronic acid is involved in detoxification of certain drugs and toxins by conjugating with them and forming glucuronides. Glucuronic acid has been found to cause an increase in TLR4-dependent reporter protein expression in a cell line transfected with TLR4 and associated co-signaling molecules, and can cause TLR4-dependent pain in humans.

Ammonium methacrylate is an ammonium salt of methacrylic acid. It is able to polymerize to form ammonium methacrylate copolymer. It is used in cosmetic industry as a binder (to hold together the ingredients of a compressed tablet or cake), film former (an ingredient that dry to form a thin coating on the skin, hair or nails) and viscosity increasing agent.

Cropropamide is the main component of the drug Prethcamide, which is a respiratory stimulant to produce arousal from drug-induced depression. Prethcamide produces a marked increase in ventilation, primarily as a result of increased tidal volume, with minimal increases in respiratory rate. Prethcamide is marketed for parenteral and oral administration to humans in several European and South American countries but is not approved by the U.S. Food and Drug Administration for use in either human or veterinary medicine in the United States. Prethcamide is banned by several sports governing bodies, including the International Olympic Committee and the International Amateur Athletic Federation, because of its potential to stimulate the performance of athletes.

Pirenoxine is an anti-cataract agent which is used in many asian countries under the name Catalin. Although its efficacy is not proved scientifically, the drug may play an important role in cataract prevention. It is supposed that the anti-cataract effect of pirenoxine results from inhibition of sulfhydryl combination of quinoid substances with lens proteins and the inhibition leads to the maintenance of lens transparency.