*** CHEMICAL IDENTIFICATION ***
RTECS NUMBER : VA4025000
CHEMICAL NAME : 4(3H)-Quinazolinone, 2-methyl-3-o-tolyl-,
hydrochloride
CAS REGISTRY NUMBER : 340-56-7
LAST UPDATED : 199712
DATA ITEMS CITED : 13
MOLECULAR FORMULA : C16-H14-N2-O.Cl-H
MOLECULAR WEIGHT : 286.78
WISWESSER LINE NOTATION : T66 BVN ENJ CR B1& D1
COMPOUND DESCRIPTOR : Drug
Reproductive Effector
Human
SYNONYMS/TRADE NAMES :
* Melsedin
* Methaqualone hydrochloride
* Methylquinazolone hydrochloride
* 2-Methyl-3-tolylchinazolon-4 hydrochloride
* 2-Methyl-3-o-tolyl-4(3H)-quinazolinone hydrochloride
* 2-Methyl-3-(o-tolyl)-4-quinazolone hydrochloride
* 2-Metil-3-(o-tolil)-4-chinazolone chloridrato
* MTQ hydrochloride
*** HEALTH HAZARD DATA ***
** ACUTE TOXICITY DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Human - man
DOSE/DURATION : 5714 ug/kg
TOXIC EFFECTS :
Behavioral - convulsions or effect on seizure threshold
Cardiac - pulse rate increase, without fall in BP
Lungs, Thorax, or Respiration - dyspnea
REFERENCE :
CTOXAO Clinical Toxicology. (New York, NY) V.1-18, 1968-81. For publisher
information, see JTCTDW. Volume(issue)/page/year: 6,317,1973
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 240 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
FRXXBL French Demande Patent Document. (U.S. Patent and Trademark Office,
Foreign Patents, Washington, DC 20231) Volume(issue)/page/year: #2081437
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 124 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and
D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,262,1972
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 120 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and
D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,262,1972
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Unreported
SPECIES OBSERVED : Rodent - rat
DOSE/DURATION : 326 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and
D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,262,1972
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 400 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
ABMGAJ Acta Biologica et Medica Germanica. (Berlin, Ger. Dem. Rep.) V.1-41,
1958-82. For publisher information, see BBIADT. Volume(issue)/page/year:
13,591,1964
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intraperitoneal
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 345 mg/kg
TOXIC EFFECTS :
Peripheral Nerve and Sensation - spastic paralysis with or without sensory
change
Behavioral - sleep
Lungs, Thorax, or Respiration - respiratory depression
REFERENCE :
NYKZAU Nippon Yakurigaku Zasshi. Japanese Journal of Pharmacology. (Nippon
Yakuri Gakkai, c/o Kyoto Daigaku Igakubu Yakurigaku Kyoshitsu, Konoe-cho,
Yoshida, Sakyo-ku, Kyoto 606, Japan) V.40- 1944- Volume(issue)/page/year:
61,1,1965
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 120 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and
D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,262,1972
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Unreported
SPECIES OBSERVED : Rodent - mouse
DOSE/DURATION : 1250 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and
D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,262,1972
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Intravenous
SPECIES OBSERVED : Rodent - rabbit
DOSE/DURATION : 120 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and
D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,262,1972
TYPE OF TEST : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - guinea pig
DOSE/DURATION : 360 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
27ZQAG "Psychotropic Drugs and Related Compounds," 2nd ed., Usdin, E., and
D.H. Efron, Washington, DC, 1972 Volume(issue)/page/year: -,262,1972
** REPRODUCTIVE DATA **
TYPE OF TEST : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE : Oral
SPECIES OBSERVED : Rodent - rat
DOSE : 1500 mg/kg
SEX/DURATION : female 1-20 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or
resorbed implants per total number of implants)
Reproductive - Effects on Embryo or Fetus - fetal death
REFERENCE :
NATUAS Nature. (Nature Subscription Dept., POB 1018, Manasguan, NJ 08736)
V.1- 1869- Volume(issue)/page/year: 200,656,1963
*** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***
NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA :
NOES - National Occupational Exposure Survey (1983)
NOES Hazard Code - X6182
No. of Facilities: 16 (estimated)
No. of Industries: 1
No. of Occupations: 1
No. of Employees: 3537 (estimated)
No. of Female Employees: 3487 (estimated)
*** END OF RECORD ***