IUPAC Name: Tert-butyl 2-cyanopyrrolidine-1-carboxylate
Systematic of 1-Pyrrolidinecarboxylicacid, 2-cyano-, 1,1-dimethylethyl ester (CAS NO.144688-70-0): Boc-l-pro-nitrile ; (S)-2-cyano-pyrrolidine-1-carboxylic acid tert-butyl ester ; (R)-n-boc-2-pyrrolidinonitrile ; (S)-1-n-boc-2-cyano-pyrrolidine ; (S)-1-n-boc-2-pyrrolidinonitrile ; (S)-(-)-boc-2-pyrrolidinonitrile ; (S)-(-)-boc-2-cyanopyrrolidine ; (S)-n-boc-2-pyrrolidinonitrile
CAS NO: 144688-70-0
Molecular Formula of 1-Pyrrolidinecarboxylicacid, 2-cyano-, 1,1-dimethylethyl ester (CAS NO.144688-70-0): C₁₀H₁₆N₂O₂
Molecular Weight: 196.2462
Molecular Structure:

Melting Point: 33-36 °C 
H bond acceptors: 4
Freely Rotating Bonds: 2
Polar Surface Area: 53.33 Å²
Index of Refraction: 1.488
Molar Refractivity: 51.96 cm³
Molar Volume: 180 cm³
Surface Tension: 41.2 dyne/cm
Density of 1-Pyrrolidinecarboxylicacid, 2-cyano-, 1,1-dimethylethyl ester (CAS NO.144688-70-0): 1.08 g/cm³
Flash Point: 140 °C
Enthalpy of Vaporization: 54.86 kJ/mol
Boiling Point: 307.9 °C at 760 mmHg
Vapour Pressure: 0.000703 mmHg at 25°C

Hazard Codes: Xn
Risk Statements: 22-36/37/38-43 
R22: Harmful if swallowed. 
R36/37/38: Irritating to eyes, respiratory system and skin. 
R43: May cause sensitization by skin contact.
Safety Statements: 26-36/37/39 
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.
WGK Germany: 3