The Molecular Structure of 1-Boc-L-azetidine-2-carboxylic acid (CAS NO.51077-14-6):

IUPAC: (2S)-1-[(2-Methylpropan-2-yl)oxycarbonyl]azetidine-2-carboxylate
Empirical Formula: C₉H₁₄NO₄
Molecular Weight: 200.2123 g/mol 
Density: 1.246 g/cm³
Melting Point: 105-110 °C
Boiling Point: 321 °C at 760 mmHg 
Flash Point: 147.9 °C
Index of Refraction: 1.51
Molar Refractivity: 48.32 cm³
Molar Volume: 161.4 cm³
Surface Tension: 49.8 dyne/cm 
Enthalpy of Vaporization: 61.869 kJ/mol 
Storage temp.: store at -15 °C 
XLogP3-AA: 1.5
H-Bond Acceptor: 4
Rotatable Bond Count: 2
Exact Mass: 200.092283
MonoIsotopic Mass: 200.092283
Topological Polar Surface Area: 69.7
Heavy Atom Count: 14
Formal Charge: -1
Complexity: 251 
Canonical SMILES: CC(C)(C)OC(=O)N1CCC1C(=O)[O-]
Isomeric SMILES: CC(C)(C)OC(=O)N1CC[C@H]1C(=O)[O-]
InChI: InChI=1S/C9H15NO4/c1-9(2,3)14-8(13)10-5-4-6(10)7(11)12/h6H,4-5H2,1-3H3,(H,11,12)/p-1/t6-/m0/s1
InChIKey: JWJVSDZKYYXDDN-LURJTMIESA-M

Hazard Codes: Xi
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
WGK Germany: 3
HazardClass: IRRITANT

 1-Boc-L-azetidine-2-carboxylic acid (CAS NO.51077-14-6) is also named as (2S)-1-(tert-Butoxycarbonyl)azetidine-2-carboxylic acid ; 1,2-Azetidinedicarboxylic acid, 1-(1,1-dimethylethyl) ester, (2S)- ; (S)-1-Boc-Azetidine-2-carboxylic acid ; (S)-Azetidine-1,2-dicarboxylic acid 1-tert-butyl ester ; (S)-N-Boc-Azetidine-2-carboxylic acid ; 1-Boc-(S)-azetidine-2-carboxylic acid . 1-Boc-L-azetidine-2-carboxylic acid (CAS NO.51077-14-6) is white powder.