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626-48-2

626-48-2 structure
626-48-2 structure

Name 6-methyluracil
Synonyms 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
Description 6-Methyluracil (Pseudothymine), a metabolite of Uracil, can be used as an indicator of acetoacetyl-CoA (AACoA) accumulation. 6-Methyluracil exhibits antiradiation effect in vivo[1][2].
Related Catalog
In Vivo 6-Methyluracil (50 mg/kg; a single i.p.) produces a pronounced radioprotective effect in BALB and SHK mice[2].
References

[1]. Cromby CH, et, al. 6-Methyluracil excretion in 2-methylacetoacetyl-CoA thiolase deficiency and in two children with an unexplained recurrent ketoacidaemia. J Inherit Metab Dis. 1994;17(1):81-4.

[2]. Taran IP, et, al. [The antiradiation action of 6-methyluracil]. Radiobiologiia. Mar-Apr 1993;33(2):285-90.

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)

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)
Symbol GHS08
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
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%