*** CHEMICAL IDENTIFICATION ***

RTECS NUMBER            : XP2105000
CHEMICAL NAME           : Thymine, 5,6-dihydro-1-nitroso-
CAS REGISTRY NUMBER     : 62641-67-2
LAST UPDATED            : 199410
DATA ITEMS CITED        : 3
MOLECULAR FORMULA       : C5-H7-N3-O3
MOLECULAR WEIGHT        : 157.15
WISWESSER LINE NOTATION : T6NVMVTJ ANO E1
COMPOUND DESCRIPTOR     : Mutagen
SYNONYMS/TRADE NAMES :
   * Dihydro-5-methyl-1-nitroso-2,4(1H,3H)-pyrimidinedione
   * 1-Nitroso-5,6-dihydrothymine
   * 2,4(1H,3H)-Pyrimidinedione, dihydro-5-methyl-1-nitroso-
 
                       *** HEALTH HAZARD DATA ***
 
                            ** MUTATION DATA **
 
TYPE OF TEST            : Mutation in microorganisms
TEST SYSTEM             : Bacteria - Salmonella typhimurium
DOSE/DURATION           : 38 umol/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            : DNA damage
ROUTE OF EXPOSURE       : Intraperitoneal
TEST SYSTEM             : Rodent - rat
DOSE/DURATION           : 700 umol/kg
REFERENCE :
   PAACA3 Proceedings of the American Association for Cancer Research. (Waverly
   Press, 428 E. Preston St., Baltimore, MD 21202)  V.1-    1954-
   Volume(issue)/page/year: 24,73,1983

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

 
                            *** END OF RECORD ***