Molecule structure of 1,3-Dimethyluracil (CAS NO.874-14-6):
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IUPAC Name: 1,3-Dimethylpyrimidine-2,4-dione 
Molecular Weight: 140.13992 g/mol
Molecular Formula: C₆H₈N₂O₂ 
Density: 1.22 g/cm³ 
Melting Point: 119-122 °C(lit.)
Boiling Point: 208.4 °C at 760 mmHg 
Flash Point: 84.3 °C
Index of Refraction: 1.519
Molar Refractivity: 34.86 cm³
Molar Volume: 114.8 cm³
Surface Tension: 41.3 dyne/cm 
Enthalpy of Vaporization: 44.47 kJ/mol
Vapour Pressure: 0.214 mmHg at 25 °C
XLogP3: -0.5
H-Bond Acceptor: 2
Exact Mass: 140.058578
MonoIsotopic Mass: 140.058578
Topological Polar Surface Area: 40.6
Heavy Atom Count: 10
Canonical SMILES: CN1C=CC(=O)N(C1=O)C
InChI: InChI=1S/C6H8N2O2/c1-7-4-3-5(9)8(2)6(7)10/h3-4H,1-2H3
InChIKey: JSDBKAHWADVXFU-UHFFFAOYSA-N
EINECS: 212-856-4
Product Categories: Pyridines, Pyrimidines, Purines and Pteredines

Hazard Codes: Xi
Risk Statements: 36-36/37/38 
R36:Irritating to eyes. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 22-24/25-39-26-36/37 
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes. 
S39:Wear eye / face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37:Wear suitable protective clothing and gloves.
WGK Germany: 3

 1,3-Dimethyluracil (CAS NO.874-14-6) is also named as N,N'-Dimethyluracil ; N1,N3-Dimethyluracil ; NSC 401858 ; 2,4(1H,3H)-Pyrimidinedione, 1,3-dimethyl- ; Uracil, 1,3-dimethyl- (8CI) . 1,3-Dimethyluracil (CAS NO.874-14-6) is white to light yellow needles.