COPPER(II) 4-OXOPENT-2-EN-2-OLATE (Copper(II) acetylacetonate [Cu(acac)2]) is a soluble copper catalyst that has been widely employed in many types of reactions. It is a powerful reagent in organic synthesis. Anticancer properties of Copper(II) acetylacetonate complex was found by treating different cancer cell lines. The TUNEL assay showed a strong positivity in the C6 cells treated with Cu(acac)2 and this indicates that the Cu compounds initiated cell death by DNA fragmentation.

Methoxetamine (abbreviated as MXE) is a novel psychoactive substance that is emerging on the Internet and induces dissociative effects and acute toxicity. MXE acts behaviourally as a typical dissociative anesthetic with stimulant and anxiogenic effects at lower doses, sedative/anesthetic effects at higher doses, and as a disruptor of sensorimotor gating. Its pharmacological effects have not yet been adequately investigated, but recently published articles shown, that MXE differentially affected motor activity, behavior and emotional states in rats, depending on the dose tested. Methoxetamine acts mainly as N-methyl-D-aspartate (NMDA) receptor antagonist and a serotonin reuptake inhibitor.

Copper selenite is used as a catalyst in the Kjeldahl digestion of nitrogenous materials.

A copper fungicide.