Molecular Structure of 1-Isopropylpiperazine (CAS NO.4318-42-7):

IUPAC Name: 1-propan-2-ylpiperazine 
Empirical Formula: C₇H₁₆N₂
Molecular Weight: 128.2153
H bond acceptors: 2
H bond donors: 1
Freely Rotating Bonds: 1
Polar Surface Area: 6.48 Å²
Index of Refraction: 1.451
Molar Refractivity: 39.22 cm³
Molar Volume: 145.6 cm³
Surface Tension: 27.4 dyne/cm
Density: 0.88 g/cm³
Flash Point: 56.4 °C
Enthalpy of Vaporization: 40.82 kJ/mol
Boiling Point: 171.8 °C at 760 mmHg
Vapour Pressure: 1.37 mmHg at 25°C
EINECS: 224-345-3
Storage temp: Flammables area
InChI
InChI=1/C7H16N2/c1-7(2)9-5-3-8-4-6-9/h7-8H,3-6H2,1-2H3
Smiles
N1(C(C)C)CCNCC1
Product Categories: Amines and Anilines; Heterocycles; Piperazines; Building Blocks; Heterocyclic Building Blocks

A poison by ingestion and skin contact. When heated to decomposition it emits toxic vapors of NO_x.
Safety information of  1-Isopropylpiperazine (CAS NO.4318-42-7):
Hazard Codes: Xn,F,C,Xi
Risk Statements: 10-21-36/37/38
R10: Flammable
R21: Harmful in contact with skin
R36/37/38: Irritating to eyes, respiratory system and skin 
Safety Statements: 16-26-36
S16: Keep away from sources of ignition - No smoking
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
S36: Wear suitable protective clothing 
RIDADR: UN 1992 3/PG 3
WGK Germany: 3
RTECS: TM0860000
Hazard Note: Irritant
HazardClass: 3
PackingGroup: III

 1-Isopropylpiperazine , with CAS number of 4318-42-7, can be called 1-(1-Methylethyl)piperazine ; 1-(Propan-2-yl)piperazine ; 1-Isopropylpiperazine ; 4-Isopropylpiperazine ; Isopropylpiperazine ; N-Isopropylpiperazine . It is a clear pale yellow liquid.