*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : YU4725000
CHEMICAL NAME           : Urea, 1,1,3-trimethyl-3-nitroso-
CAS REGISTRY NUMBER     : 3475-63-6
BEILSTEIN REFERENCE NO. : 2077277
LAST UPDATED            : 199612
DATA ITEMS CITED        : 11
MOLECULAR FORMULA       : C4-H9-N3-O2
MOLECULAR WEIGHT        : 131.16
WISWESSER LINE NOTATION : ONN1&VN1&1
COMPOUND DESCRIPTOR     : Tumorigen
                          Mutagen
                          Reproductive Effector
SYNONYMS/TRADE NAMES :
   * N-Nitroso-trimethylharnstoff
   * Nitrosotrimethylurea
   * N-Nitrosotrimethylurea
   * Trimethylnitrosoharnstoff
   * Trimethylnitrosomocovina
   * N-Trimethyl-N-nitrosourea
   * 1,1,3-Trimethyl-3-nitrosourea
 
                       *** HEALTH HAZARD DATA ***
 
                        ** ACUTE TOXICITY DATA **
 
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 :
   ZEKBAI Zeitschrift fuer Krebsforschung.  (Berlin, Fed. Rep. Ger.)  V.1-75,
   1903-71.  For publisher information, see JCROD7.  Volume(issue)/page/year:
   69,103,1967
 
TYPE OF TEST            : LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE       : Intravenous
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 240 mg/kg
TOXIC EFFECTS :
   Details of toxic effects not reported other than lethal dose value
REFERENCE :
   ZEKBAI Zeitschrift fuer Krebsforschung.  (Berlin, Fed. Rep. Ger.)  V.1-75,
   1903-71.  For publisher information, see JCROD7.  Volume(issue)/page/year:
   69,103,1967
 
                          ** TUMORIGENIC DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1070 mg/kg/53W-C
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Brain and Coverings - tumors
   Peripheral Nerve and Sensation - peripheral nerve tumors
REFERENCE :
   ZEKBAI Zeitschrift fuer Krebsforschung.  (Berlin, Fed. Rep. Ger.)  V.1-75,
   1903-71.  For publisher information, see JCROD7.  Volume(issue)/page/year:
   69,103,1967
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Intravenous
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1950 mg/kg/48W-I
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Brain and Coverings - tumors
   Peripheral Nerve and Sensation - peripheral nerve tumors
REFERENCE :
   ZEKBAI Zeitschrift fuer Krebsforschung.  (Berlin, Fed. Rep. Ger.)  V.1-75,
   1903-71.  For publisher information, see JCROD7.  Volume(issue)/page/year:
   69,103,1967
 
TYPE OF TEST            : TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 1598 mg/kg/I
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Skin and Appendages - tumors
REFERENCE :
   BTPGAZ Beitraege zur Pathologie.  (Stuttgart, Fed. Rep. Ger.)  V.141-161,
   1970-77.  For publisher information, see PARPDS.  Volume(issue)/page/year:
   146,33,1972
 
TYPE OF TEST            : TD - Toxic dose (other than lowest)
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 2950 mg/kg/47W-C
TOXIC EFFECTS :
   Tumorigenic - equivocal tumorigenic agent by RTECS criteria
   Brain and Coverings - tumors
   Gastrointestinal - tumors
REFERENCE :
   JJIND8 JNCI, Journal of the National Cancer Institute.  (Washington, DC)
   V.61-79, 1978-87. For publisher information, see JNCIEQ.
   Volume(issue)/page/year: 65,451,1980
 
                          ** REPRODUCTIVE DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Intravenous
SPECIES OBSERVED        : Rodent - rat
DOSE                    : 40 mg/kg
SEX/DURATION            : female 10 day(s) after conception
TOXIC EFFECTS :
   Reproductive - Specific Developmental Abnormalities - other developmental
   abnormalities
REFERENCE :
   APEPA2 Naunyn-Schmiedebergs Archiv fuer Pharmakologie und Experimentelle
   Pathologie.  (Berlin, Ger.) V.254-263, 1966-69.  For publisher information,
   see NSAPCC.  Volume(issue)/page/year: 257,296,1967
 
                            ** MUTATION DATA **
 
TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Salmonella typhimurium
DOSE/DURATION           : 7 mmol/L
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 48,131,1977
 
TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Salmonella typhimurium
DOSE/DURATION           : 1 mg/plate
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 51,319,1978
 
TYPE OF TEST            : Micronucleus test
ROUTE OF EXPOSURE       : Oral
TEST SYSTEM             : Rodent - mouse
DOSE/DURATION           : 10 mg/kg
REFERENCE :
   EMMUEG Environmental and Molecular Mutagenesis.  (Alan R. Liss, Inc., 41 E.
   11th St., New York, NY 10003)  V.10-    1987-  Volume(issue)/page/year:
   27,202,1996

                          *** STATUS IN U.S. ***
 
   EPA GENETOX PROGRAM 1988, Positive: Histidine reversion-Ames test

 
                            *** END OF RECORD ***