The CAS registry number of Boronic acid,(5-chloro-3-formyl-2-thienyl)-(9CI) is 36155-87-0. The systematic name is (5-chloro-3-formylthiophen-2-yl)boronic acid. In addition, the molecular formula is C₅H₄BClO₃S and the molecular weight is 190.41. What's more, it should be stored in a cool and dry place.

Physical properties about Boronic acid,(5-chloro-3-formyl-2-thienyl)-(9CI) are: (1)ACD/LogP: 1.05 ; (2)ACD/LogD (pH 5.5): 1.04; (3)ACD/LogD (pH 7.4): 0.93; (4)ACD/BCF (pH 5.5): 3.65; (5)ACD/BCF (pH 7.4): 2.84; (6)ACD/KOC (pH 5.5): 87.88; (7)ACD/KOC (pH 7.4): 68.26; (8)#H bond acceptors: 3; (9)#H bond donors: 2; (10)#Freely Rotating Bonds: 4; (11)Polar Surface Area: 63.77 Å²; (12)Index of Refraction: 1.593; (13)Molar Refractivity: 41.22 cm³; (14)Molar Volume: 121.6 cm³; (15)Polarizability: 16.34 ×10^-24cm³; (16)Surface Tension: 61.6 dyne/cm; (17)Density: 1.56 g/cm³; (18)Flash Point: 194.6 °C; (19)Enthalpy of Vaporization: 68.41 kJ/mol; (20)Boiling Point: 398.1 °C at 760 mmHg; (21)Vapour Pressure: 4.71E-07 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: O=Cc1c(sc(Cl)c1)B(O)O
(2)InChI: InChI=1/C5H4BClO3S/c7-4-1-3(2-8)5(11-4)6(9)10/h1-2,9-10H
(3)InChIKey: LEBVEUCSVITXMX-UHFFFAOYAY