Molecular structure of 2-Amino-3-methylpyrazine (CAS NO.19838-08-5) is:

Product Name: 2-Amino-3-methylpyrazine 
CAS Registry Number: 19838-08-5
IUPAC Name: 3-Methylpyrazin-2-amine
Molecular Weight: 109.12918 [g/mol]
Molecular Formula: C₅H₇N₃
XLogP3-AA: -0.2
H-Bond Donor: 1
H-Bond Acceptor: 3
Index of Refraction: 1.581
Molar Refractivity: 31.49 cm³
Molar Volume: 94.4 cm³
Surface Tension: 56.6 dyne/cm
Density: 1.155 g/cm³
Flash Point: 123.7 °C
Enthalpy of Vaporization: 47.96 kJ/mol
Boiling Point: 242.6 °C at 760 mmHg
Vapour Pressure: 0.0337 mmHg at 25°C

 2-Amino-3-methylpyrazine , its cas register number is 19838-08-5. It also can be called 2-Pyrazinamine,3-methyl- ; 3-Methylpyrazin-2-amine ; 3-Methyl-2-pyrazinamine .