methylmethaqualone methylmethaqualone methylmethaqualone (mmq) is a quinazolinone and an analogue of methaqualone that has similar sedative and hypnotic properties to its parent compound (resulting from its agonist activity at the β subtype of the gabaa receptor)and is around 3 times as potent in animal models. methylmethaqualone differs from methaqualone by 4-methylation on the phenyl ring. it was made illegal in germany in 1999 and listed by the dea as a "drug of forensic interest" at about the same time, but little other information is available. it would appear that this compound was sold on the black market in germany as a designer drug analogue of methaqualone. methylmethaqualoneclinical dataatc codenonelegal statuslegal status de: anlage i (authorized scientific use only) identifiers iupac name 3-(2,4-dimethylphenyl)-2-methylquinazolin-4(3h)-one cas number3244-75-5 ypubchem cid63382chemspider57045 yuniiobq1bqr74tcomptox dashboard (epa)dtxsid00172675 chemical and physical dataformulac17h16n2omolar mass264.322 g·mol−13d model (jsmol)interactive image smiles o=c1c3c(\n=c(/n1c2ccc(cc2c)c)c)cccc3 inchi inchi=1s/c17h16n2o/c1-11-8-9-16(12(2)10-11)19-13(3)18-15-7-5-4-6-14(15)17(19)20/h4-10h,1-3h3 ykey:mpmdmuroziyiim-uhfffaoysa-n y (verify) animal studies of methylmethaqualone have shown it to produce convulsions at only slightly above the effective sedative dose, and anecdotal reports from human users have confirmed that it can have a pro-convulsive effect, which has potential to make this compound particularly hazardous if taken in excessive doses.