The 3-Methoxycarbonylphenylboronic acid, with the CAS registry number 99769-19-4, has the systematic name of [3-(methoxycarbonyl)phenyl]boronic acid. And the molecular formula of this chemical is C₈H₉BO₄. It is a kind of white to light yellow crystal powder, and belongs to the following product categories: Blocks; Boronic Acids; Carboxes; Acids and Derivatives; Boron, Nitrile, Thio,& TM-Cpds; Boronic acids; Aryl; Ester; Organoborons; B (Classes of Boron Compounds); Boronic acid; Chiral chemicals. In addition, it should be stored in the refrigerator(+4°C).

The physical properties of 3-Methoxycarbonylphenylboronic acid are as following: (1)ACD/LogP: 1.57; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.56; (4)ACD/LogD (pH 7.4): 1.4; (5)ACD/BCF (pH 5.5): 9.09; (6)ACD/BCF (pH 7.4): 6.25; (7)ACD/KOC (pH 5.5): 168.62; (8)ACD/KOC (pH 7.4): 116.02; (9)#H bond acceptors: 4; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 5; (12)Polar Surface Area: 44.76 Å²; (13)Index of Refraction: 1.532; (14)Molar Refractivity: 44.4 cm³; (15)Molar Volume: 143.1 cm³; (16)Polarizability: 17.6×10^-24cm³; (17)Surface Tension: 47.3 dyne/cm; (18)Density: 1.25 g/cm³; (19)Flash Point: 171.5 °C; (20)Enthalpy of Vaporization: 63.9 kJ/mol; (21)Boiling Point: 359.9 °C at 760 mmHg; (22)Vapour Pressure: 8.29E-06 mmHg at 25°C.

Uses of 3-Methoxycarbonylphenylboronic acid: It can react with 2-chloro-5-nitro-biphenyl to produce 4'-nitro-[1,1';2',1'']terphenyl-3-carboxylic acid methyl ester. This reaction will need reagents Pd(OAc)₂, K₃PO₄ and 2-(dicyclohexylphosphino)biphenyl, and the solvent toluene. The reaction time is 1 hour with temperature of 85°C, and the yield is about 86%.

You should be cautious while dealing with this chemical. It irritates eyes, respiratory system and skin. Therefore, you had better take the following instructions: Wear suitable protective clothing, gloves and eye/face protection, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(OC)c1cc(B(O)O)ccc1
(2)InChI: InChI=1/C8H9BO4/c1-13-8(10)6-3-2-4-7(5-6)9(11)12/h2-5,11-12H,1H3
(3)InChIKey: ALTLCJHSJMGSLT-UHFFFAOYAH