Clinical data
ATC code none
CAS Number 340-52-3
PubChem (CID) 63339
ChemSpider 57006
Chemical and physical data
Formula C16H13N3O4
Molar mass 311.29
3D model (Jmol) Interactive image

Nitromethaqualone[1] is an analogue of methaqualone that has similar sedative and hypnotic properties.[2] It is significantly more potent (10x) compared to the parent compound; the typical dose is approximately 25 mg.[3] However, the aromatic nitro group is metabolised to the corresponding aniline, which proved to be a mutagen.[3] As a consequence, nitromethaqualone was not developed further due to toxicity concerns.


  1. US patent 3162634, Klosa, J. (Berlin, Germany), "2-Methyl-3-(2'-methyl-3'-chlorphenyl)-quinazolone-(4)", issued 1964-12-22
  2. Szirmai, A. (1963). "(title in German)" [Pharmacological and Therapeutic Studies with a New Quinazolone Derivative, Nitromethaqualone]. Therapeutische Umschau (in German). 20: 542–546. PMID 14101319.
  3. 1 2 van Boven, M.; Daenens, P. (1982). "Biotransformation and Excretion of Nitromethaqualone in Rats and Humans". Journal of Pharmaceutical Sciences. 71 (10): 1152–1157. doi:10.1002/jps.2600711019. PMID 7143214.

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