Molecular structure of 2-Amino-3-methyl-5-nitropyridine (CAS NO.18344-51-9) is:

Product Name: 2-Amino-3-methyl-5-nitropyridine
CAS Registry Number: 18344-51-9
IUPAC Name: 3-methyl-5-nitropyridin-2-amine
Molecular Weight: 153.13868 [g/mol]
Molecular Formula: C₆H₇N₃O₂
XLogP3-AA: 0.7
H-Bond Donor: 1
H-Bond Acceptor: 4 
Melting Point: 249-253 °C 
Surface Tension: 64.4 dyne/cm
Density: 1.354 g/cm³
Flash Point: 173.6 °C
Enthalpy of Vaporization: 60.96 kJ/mol
Boiling Point: 363.5 °C at 760 mmHg
Vapour Pressure: 1.8E-05 mmHg at 25°C
Product Categories: Pyridine; Pyridine series; Pyridines; Heterocyclic Compounds; Bases & Related Reagents; Heterocycles; Nucleotides; Boronic Acid

Safty information about 2-Amino-3-methyl-5-nitropyridine (CAS NO.18344-51-9) is:
Hazard Codes: Xn,Xi
Risk Statements: 36/37/38-20/21/22-41-22 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed. 
R41:Risk of serious damage to the eyes. 
R22:Harmful if swallowed.
Safety Statements: 36/37/39-26-22-39-36 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S22:Do not breathe dust. 
S39:Wear eye / face protection. 
S36:Wear suitable protective clothing.
RIDADR: UN2811
HazardClass: IRRITANT

 2-Amino-3-methyl-5-nitropyridine , its cas register number is 18344-51-9. It also can be called 2-Amino-5-nitro-3-picoline ; 3-methyl-5-nitropyridin-2-amine ; 2-Bromo-5-Nitro-3-Methyl Pyridine ; 3-Methyl-5-nitro-pyridin-2-ylamin . It is a white to yellow crystalline powder.