Molecular Structure of 2-Methylpyrazine (CAS NO.109-08-0):

IUPAC Name: 2-Methylpyrazine 
Molecular Formula: C₅H₆N₂
Molecular Weight: 94.12
EINECS: 203-645-8
FEMA: 3309
XLogP3: 0.2
H-Bond Donor: 0
H-Bond Acceptor: 2
Melting Point: −29 °C(lit.)
Index of Refraction: 1.503
Molar Refractivity: 27.26 cm³
Molar Volume: 92.1 cm³
Surface Tension: 41 dyne/cm
Density: 1.021 g/cm³
Flash Point: 50 °C
Enthalpy of Vaporization: 35.72 kJ/mol
Boiling Point: 135.1 °C at 760 mmHg
Vapour Pressure: 9.69 mmHg at 25 °C
storage temp.: Flammables area
Classification Code: Mutation data 
Appearance: clear colorless to slightly yellow liquid
Canonical SMILES: CC1=NC=CN=C1
InChI: InChI=1S/C5H6N2/c1-5-4-6-2-3-7-5/h2-4H,1H3
InChIKey: CAWHJQAVHZEVTJ-UHFFFAOYSA-N
Product Categories: Pyrazine; Pyrazines; Mono- & Polyalkylpyrazines; pyrazine Flavor; Alphabetical Listings; Flavors and Fragrances; M-N; Building Blocks; Heterocyclic Building Blocks; Pyrazine compounds

Reported in EPA TSCA Inventory.

Moderately toxic by ingestion and intraperitoneal routes. Mutation data reported. Flammable liquid when exposed to heat, sparks, or flame. Can react with oxidizing materials. To fight fire, use water spray, foam, dry chemical, CO₂. When heated to decomposition it emits highly toxic fumes of NO_x.
Safety Information of 2-Methylpyrazine (CAS NO.109-08-0):
Hazard Codes: Xn,Xi,F
Risk Statements: 10-22-36/37/38 
R10:Flammable. 
R22:Harmful if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36-16 
S16:Keep away from sources of ignition. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.
RIDADR: UN 1993 3/PG 3
WGK Germany: 3
RTECS: UQ3675000
HazardClass: 3
PackingGroup: III

 2-Methylpyrazine (CAS NO.109-08-0), its Synonyms are 2-Methyl-1,4-diazine ; Methylpyrazine ; Pyrazine, 2-methyl- ; Pyrazine, methyl- .