11-NOR-9-CARBOXY-DELTA9-TETRAHYDROCANNABINOL (THC-COOH) is the main the non-psychoactive metabolite of Delta9-Tetrahydrocannabinol. Being most abundant in bodily fluids, it has become an established marker of cannabis consumption in forensic, clinical and environmental analyses. Among the cannabinoids tested as potential inhibitors of the drug efflux transporter P-glycoprotein (Pgp), which is responsible for the multidrug-resistance of a tumour and normal cells, THC-COOH behaved as a substrate and was the most active in stimulating Pgp-dependent ATPase. It displayed analgesic and anti-inflammatory properties apparently by inhibiting cyclooxygenase and 5-lipoxygenase activities. THC-COOH was not an anxiolytic or anxiogenic drug but abolished the anxiogenic behavioral effect of Delta9-Tetrahydrocannabinol.

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.

Cannabinol is a cannabinoid isolated from the plant Cannabis that is a metabolite of tetrahydrocannabinol (THC), with potential immunosuppressive and anti-inflammatory activities. Cannabinol acts as a partial agonist at the CB1 receptors, but it preferentially binds to the cannabinoid G-protein coupled receptor CB2, which is mainly expressed on a variety of immune cells, such as T-cells, B-cells, macrophages and dendritic cells. Stimulation of CB2 receptors by cannabinol may both trigger apoptosis in these cells and inhibit the production of a variety of cytokines. In the United States, federal and state laws regarding the legality of cannabis products are confusing and at times contradictory. CBN is not listed in the list of scheduled controlled substances in the USA.

CB-13 is a cannabinoid drug, which acts as a potent agonist at both the CB1 and CB2 receptors, but has poor blood-brain barrier penetration, and so produces only peripheral effects at low doses, with symptoms of central effects such as catalepsy only appearing at much higher dose ranges. CB-13 displays antihyperalgesic activity in a rat model of neuropathic pain with no CNS side effects.