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6-Methyluracil

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6-Methyluracil Basic information

Product Name:
6-Methyluracil
Synonyms:
  • AURORA KA-4132
  • METHYLURACIL, 6-
  • 6-Methyl-2,4(1H,3H)-pyrimidinedione
  • 6-methyl-uraci
  • Awd 23-15
  • Metacil
  • Metacyl
  • Methacil
CAS:
626-48-2
MF:
C5H6N2O2
MW:
126.11
EINECS:
210-949-4
Product Categories:
  • Heterocycle-Pyrimidine series
  • Bases & Related Reagents
  • PYRIMIDINE
  • Nucleotides and Nucleosides
  • Pyrimidines
  • Nucleotides
  • Pyridines, Pyrimidines, Purines and Pteredines
  • bc0001
Mol File:
626-48-2.mol
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6-Methyluracil Chemical Properties

Melting point:
318 °C (dec.)(lit.)
Density 
1.226±0.06 g/cm3(Predicted)
storage temp. 
Inert atmosphere,Room Temperature
solubility 
DMSO (Slightly), Methanol (Slightly, Heated, Sonicated)
pka
pK1:9.52 (25°C)
form 
Fine Crystalline Powder
color 
White to almost white
Water Solubility 
7 g/L (22 ºC)
Merck 
14,6133
BRN 
115647
InChIKey
SHVCSCWHWMSGTE-UHFFFAOYSA-N
CAS DataBase Reference
626-48-2(CAS DataBase Reference)
NIST Chemistry Reference
6-Methyluracil(626-48-2)
EPA Substance Registry System
2,4(1H,3H)-Pyrimidinedione, 6-methyl- (626-48-2)
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Safety Information

Hazard Codes 
Xn
Risk Statements 
62-63
Safety Statements 
36/37/39-45-36/37
RIDADR 
1759
WGK Germany 
3
RTECS 
YR0700000
TSCA 
Yes
HazardClass 
8
PackingGroup 
II
HS Code 
29335995
Hazardous Substances Data
626-48-2(Hazardous Substances Data)
Toxicity
LD50 oral in rat: 64500mg/kg

MSDS

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6-Methyluracil Usage And Synthesis

Chemical Properties

White to Off-White Crystalline Solid

Uses

6-Methyluracil (cas# 626-48-2) is a compound useful in organic synthesis.

Preparation

6-Methyluracil [626-48-2]. is produced by condensation of diketene with urea. It is used in the production of the analgesic mepirizole, the feed additive orotic acid, and 5-aminoorotic acid.

Definition

ChEBI: A pyrimidone that is uracil with a methyl group at position 6.

Safety Profile

Moderately toxic by ingestion. Questionable carcinogen with experimental neoplastigenic and teratogenic data. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of NOx.

Purification Methods

Crystallise 6-methyluracil from EtOH or acetic acid. [Beilstein 24 III/IV 1281.]

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