Semicarbazides

Semicarbazide is the chemical compound with the formula OC(NH2)(N2H3). It is a water-soluble white solid. It is a derivative of urea.

Nitrotriazolone (NTO) is a cyclic semicarbazide-derived high explosive first identified in 1905, but not thoroughly researched until the 1980s. NTO is currently being used by the US Army in specialty insensitive munitions.

Biurea is a chemical compound with the molecular formula C2H6N4O2. It is produced in food products containing azodicarbonamide, a common ingredient in bread flour, when they are cooked. Upon exposure, biurea is rapidly eliminated from the body through excretion.

Thiosemicarbazide is the chemical compound with the formula H2NC(S)NHNH2. A white, odorless solid, it is related to thiourea (H2NC(S)NH2) by the insertion of an NH center. They are commonly used as ligands for transition metals. Many thiosemicarbazides are known. These feature an organic substituent in place of one or more H's of the parent molecule. 4-Methyl-3-thiosemicarbazide is a simple example.

4-Phenylthiosemicarbazide (4-PTSC) is a thiosemicarbazide used as an agricultural chemical and pesticide. It also possesses antibacterial properties attributed to electron delocalization in the thiosemicarbazide moiety.