Molecular Structure of 4-Amino-6-methoxypyrimidine (CAS NO.696-45-7):

IUPAC Name: 6-methoxypyrimidin-4-amine 
Empirical Formula: C₅H₇N₃O
Molecular Weight: 125.1286
H bond acceptors: 4
H bond donors: 2
Freely Rotating Bonds: 1
Polar Surface Area: 38.25Ų
Index of Refraction: 1.566
Molar Refractivity: 33.35 cm³
Molar Volume: 102.1 cm³
Surface Tension: 54.8 dyne/cm
Density: 1.224 g/cm³
Flash Point: 129.7 °C
Enthalpy of Vaporization: 53.02 kJ/mol
Boiling Point: 290.8 °C at 760 mmHg
Vapour Pressure: 0.00202 mmHg at 25°C
Melting point:157-160 °C(lit.)
Product Categories: Pyrimidine; Amines; Pyrazines, Pyrimidines & Pyridazines; Imidazoles & Benzimidazoles; Building Blocks; Heterocyclic Building Blocks; Pyrimidines

Hazard Codes: Xi,Xn
Risk Statements: 36/37/38-21/22-6/37/38
R36/37/38:Irritating to eyes, respiratory system and skin. 
R21/22:Harmful in contact with skin and if swallowed. 
R6:Explosive with or without contact with air. 
R37/38:Irritating to respiratory system and skin.
Safety Statements: 26-36-36/37/39
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.
WGK Germany: 3
HazardClass: Irritant

  4-Amino-6-methoxypyrimidine , with CAS number of 696-45-7, can be called 4-pyrimidinamine, 6-methoxy- ; 6-Methoxypyrimidin-4-amin ; 6-Methoxypyrimidin-4-amine ; 6-Methoxy-4-pyrimidinamine . It is a white to yellow powder.