6-Methyluracil
Suppliers
Names
[ CAS No. ]:
626-48-2
[ Name ]:
6-Methyluracil
[Synonym ]:
6-Methyluracil
2,4-Dihydroxy-6-methylpyrimidine
2,4(1H,3H)-Pyrimidinedione, 6-methyl-
6-Methylpyrimidin-2,4(1H,3H)-dion
EINECS 210-949-4
6-Methyl-2,4(1H,3H)-pyrimidinedione
6-Methylpyrimidine-2,4(1H,3H)-dione
6-methyl-1H-pyrimidine-2,4-dione
6-methylpyrimidine-2,4-diol
MFCD00006028
Chemical & Physical Properties
[ Density]:
1.2±0.1 g/cm3
[ Melting Point ]:
318 °C (dec.)(lit.)
[ Molecular Formula ]:
C5H6N2O2
[ Molecular Weight ]:
126.113
[ Flash Point ]:
208ºC
[ Exact Mass ]:
126.042931
[ PSA ]:
65.72000
[ LogP ]:
-0.12
[ Index of Refraction ]:
1.490
[ Water Solubility ]:
7 g/L (22 ºC)
MSDS
Toxicological Information
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- YR0700000
- CHEMICAL NAME :
- Uracil, 6-methyl-
- CAS REGISTRY NUMBER :
- 626-48-2
- LAST UPDATED :
- 199701
- DATA ITEMS CITED :
- 9
- MOLECULAR FORMULA :
- C5-H6-N2-O2
- MOLECULAR WEIGHT :
- 126.13
- WISWESSER LINE NOTATION :
- T6MVMVJ F1
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 :
- 64500 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- LONZA# Personal Communication from LONZA Ltd., CH-4002, Basel, Switzerland Volume(issue)/page/year: 03FEB1981
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- >7500 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- JAPMA8 Journal of the American Pharmaceutical Association, Scientific Edition. (Washington, DC) V.29-49, 1940-60. For publisher information, see JPMSAE. Volume(issue)/page/year: 44,56,1955
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Intraperitoneal
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 2700 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- PCJOAU Pharmaceutical Chemistry Journal (English Translation). Translation of KHFZAN. (Plenum Pub. Corp., 233 Spring St., New York, NY 10013) No.1- 1967- Volume(issue)/page/year: 27,112,1993
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Mammal - species unspecified
- DOSE/DURATION :
- 2 gm/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- RPTOAN Russian Pharmacology and Toxicology (English Translation). Translation of FATOAO. (Euromed Pub., 33, Woodlands Rd., Surbiton, Surrey, UK) V.30- 1967- Volume(issue)/page/year: 48,186,1985 ** TUMORIGENIC DATA **
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 18 gm/kg/52W-C
- TOXIC EFFECTS :
- Tumorigenic - neoplastic by RTECS criteria Endocrine - thyroid tumors
- REFERENCE :
- VOONAW Voprosy Onkologii. Problems of Oncology. For English translation, see PONCAU. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1-10, 1928-37; V.1- 1955- Volume(issue)/page/year: 8(10),49,1962 ** REPRODUCTIVE DATA **
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Oral
- DOSE :
- 2 gm/kg
- SEX/DURATION :
- female 10 day(s) after conception
- TOXIC EFFECTS :
- Reproductive - Effects on Embryo or Fetus - fetal death Reproductive - Specific Developmental Abnormalities - urogenital system
- REFERENCE :
- BEXBAN Bulletin of Experimental Biology and Medicine (English Translation). Translation of BEBMAE. (Plenum Pub. Corp., 233 Spring St., New York, NY 10013) V.41- 1956- Volume(issue)/page/year: 66,1382,1968
- TYPE OF TEST :
- TDLo - Lowest published toxic dose
- ROUTE OF EXPOSURE :
- Subcutaneous
- DOSE :
- 20 mg/kg
- SEX/DURATION :
- female 4 day(s) pre-mating
- TOXIC EFFECTS :
- Reproductive - Maternal Effects - uterus, cervix, vagina
- REFERENCE :
- JSICAZ Journal of Scientific and Industrial Research, Section C: Biological Sciences. (New Delhi, India) V.14-21, 1955-62. For publisher information, see IJEBA6. Volume(issue)/page/year: 19,264,1960 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X1624 No. of Facilities: 89 (estimated) No. of Industries: 5 No. of Occupations: 6 No. of Employees: 293 (estimated) No. of Female Employees: 109 (estimated)
Safety Information
[ Symbol ]:
GHS08
[ Signal Word ]:
Warning
[ Hazard Statements ]:
H361
[ Precautionary Statements ]:
P281
[ Personal Protective Equipment ]:
dust mask type N95 (US);Eyeshields;Gloves
[ Hazard Codes ]:
Xn:Harmful
[ Risk Phrases ]:
R62;R63
[ Safety Phrases ]:
S36/37/39-S45-S36/37
[ RIDADR ]:
1759
[ WGK Germany ]:
3
[ RTECS ]:
YR0700000
[ Packaging Group ]:
II
[ Hazard Class ]:
8
[ HS Code ]:
2942000000
Synthetic Route
Precursor & DownStream
Precursor
DownStream
Customs
[ HS Code ]: 2933599090
[ Summary ]:
2933599090. other compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring in the structure. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%
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The synthesis of a series of (R)-1-alkyl-3-[2-(2-amino)phenethyl]-5-(2-fluorophenyl)-6-methyluracils is discussed. SAR around N-1 of the uracil was explored, which led to the discovery that an electro...