Molecule structure of 4'-(1-Pyrrolidino)acetophenone (CAS NO.21557-09-5):

Molecular Formula: C₁₂H₁₅NO
Molecular Weight: 189.25 g/mol
CAS Registry Number: 21557-09-5 
Index of Refraction: 1.556
Molar Refractivity: 56.48 cm³
Molar Volume: 175.4 cm³
Polarizability: 22.39×10^-24 cm³
Surface Tension: 41 dyne/cm
Density: 1.078 g/cm³ 
Melting Point: 129-131 °C
Flash Point: 136.5 °C
Enthalpy of Vaporization: 58.65 kJ/mol
Boiling Point: 342.7 °C at 760 mmHg
Vapour Pressure: 7.41E-05 mmHg at 25 °C 
InChI: InChI=1/C12H15NO/c1-10(14)11-4-6-12(7-5-11)13-8-2-3-9-13/h4-7H,2-3,8-9H2,1H3 
InChIKey: WNRFELFKDNNURJ-UHFFFAOYAD
Std. InChI: InChI=1S/C12H15NO/c1-10(14)11-4-6-12(7-5-11)13-8-2-3-9-13/h4-7H,2-3,8-9H2,1H3 
Std. InChIKey: WNRFELFKDNNURJ-UHFFFAOYSA-N 
Product Categories of 4'-(1-Pyrrolidino)acetophenone (CAS NO.21557-09-5): Amines; blocks

Risk Statements: 36/37/38 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S36:Wear suitable protective clothing.

 4'-(1-Pyrrolidino)acetophenone (CAS NO.21557-09-5) is also named as Ethanone, 1-[4-(1-pyrrolidinyl)phenyl]- ; 1-[4-(Pyrrolidin-1-yl)phenyl]ethanone .