Molecular Structure of 2-Hydrazino-4-(trifluoromethyl)pyrimidine (CAS NO.197305-97-8):

IUPAC Name: [4-(trifluoromethyl)pyrimidin-2-yl]hydrazine 
Empirical Formula: C₅H₅F₃N₄
Molecular Weight: 178.1152
H bond acceptors: 4
H bond donors: 3
Freely Rotating Bonds: 1
Polar Surface Area: 32.26 Å²
Index of Refraction: 1.531
Molar Refractivity: 35.92 cm³
Molar Volume: 116 cm³
Surface Tension: 45.2 dyne/cm
Density: 1.535 g/cm³
Flash Point: 123.7 °C
Enthalpy of Vaporization: 51.97 kJ/mol
Boiling Point: 281 °C at 760 mmHg
Vapour Pressure: 0.00367 mmHg at 25°C
Melting point: 99-101 °C(lit.)
Product Categories: Building Blocks; Heterocyclic Building Blocks; Pyrimidines

Hazard Codes: T,Xi
Risk Statements: 23/24/25-36/37/38
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36/37/39-45
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: UN 2811 6.1/PG 3
WGK Germany: 3
HazardClass: Irritant, Irritant-harmful

  2-Hydrazino-4-(trifluoromethyl)pyrimidine , with CAS number of 197305-97-8, can be called 4-(Trifluoromethyl)pyrimidin-2-ylhydrazine ; pyrimidine, 2-hydrazinyl-4-(trifluoromethyl)- ; 1-[4-(trifluoromethyl)pyrimidin-2-yl]hydrazine .