*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : FC6250000
CHEMICAL NAME           : Carbamic acid, methylnitroso-,
                          2,3-dihydro-2,2-dimethylbenzofuran-7-yl ester
CAS REGISTRY NUMBER     : 62593-23-1
LAST UPDATED            : 199410
DATA ITEMS CITED        : 6
MOLECULAR FORMULA       : C12-H14-N2-O4
MOLECULAR WEIGHT        : 250.28
COMPOUND DESCRIPTOR     : Agricultural Chemical
                          Tumorigen
                          Mutagen
SYNONYMS/TRADE NAMES :
   * 2,3-Dihydro-2,2-dimethyl-7-benzofuranyl nitroso-methyl carbamate
   * Methylnitrosocarbamic acid 2,3-dihydro-2,2-dimethyl-7-benzofuranyl ester
   * Nitrosocarbofuran
 
                       *** HEALTH HAZARD DATA ***
 
                          ** TUMORIGENIC DATA **
 
TYPE OF TEST            : TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE       : Oral
SPECIES OBSERVED        : Rodent - rat
DOSE/DURATION           : 380 mg/kg/23W-I
TOXIC EFFECTS :
   Tumorigenic - Carcinogenic by RTECS criteria
   Gastrointestinal - tumors
REFERENCE :
   EESADV Ecotoxicology and Environmental Safety.  (Academic Press, Inc., 1 E.
   First St., Duluth, MN 55802)  V.1-    1977-  Volume(issue)/page/year:
   2,413,1978
 
                            ** MUTATION DATA **
 
TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Salmonella typhimurium
DOSE/DURATION           : 2500 ng/plate
REFERENCE :
   TCMUE9 Topics in Chemical Mutagenesis.  (Plenum Pub. Corp., 233 Spring
   Street, New York, NY 10013) V.1-    1984-  Volume(issue)/page/year:
   1,13,1984
 
TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Escherichia coli
DOSE/DURATION           : 100 umol/L
REFERENCE :
   IARCCD IARC Scientific Publications.  (Geneva, Switzerland)  No.1-26,
   1971-78.  For publisher information, see IAPUDO.  Volume(issue)/page/year:
   14,425,1976
 
TYPE OF TEST            : DNA damage
TEST SYSTEM             : Human Fibroblast
DOSE/DURATION           : 10 umol/L
REFERENCE :
   MUREAV Mutation Research.  (Elsevier Science Pub. B.V., POB 211, 1000 AE
   Amsterdam, Netherlands) V.1-    1964-  Volume(issue)/page/year: 44,1,1977
 
TYPE OF TEST            : Cytogenetic analysis
TEST SYSTEM             : Rodent - hamster Ovary
DOSE/DURATION           : 50 nmol/L
REFERENCE :
   JTEHD6 Journal of Toxicology and Environmental Health.  (Hemisphere Pub.,
   1025 Vermont Ave., NW, Washington, DC 20005)  V.1-    1975/76-
   Volume(issue)/page/year: 7,519,1981
 
TYPE OF TEST            : Sister chromatid exchange
TEST SYSTEM             : Rodent - hamster Ovary
DOSE/DURATION           : 500 nmol/L
REFERENCE :
   JTEHD6 Journal of Toxicology and Environmental Health.  (Hemisphere Pub.,
   1025 Vermont Ave., NW, Washington, DC 20005)  V.1-    1975/76-
   Volume(issue)/page/year: 7,519,1981
 
                            *** END OF RECORD ***