The 2-Bromobenzylmagnesium bromide has CAS registry number 56812-60-3. This chemical's molecular formula is C₇H₆Br₂Mg and molecular weight is 274.24. What's more, its systematic name is Bromo-[(2-bromophenyl)methyl]magnesium. In addition, it must be stored in airtight containers and placed in a dry, cool place. Besides, physical properties about 2-Bromobenzylmagnesium bromide are: (1)#H bond acceptors: 0; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 2.

When you are using this chemical, please be cautious about it as the following:
As a chemical, it is harmful if swallowed. And this chemical reacts violently with water. In addition, it may form explosive peroxides. During using it, wear suitable protective clothing, gloves and eye/face protection. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Besides, this chemical is extremely flammable, and it may catch fire on contacting with an ignition source. Hence, keep it away from sources of ignition.

You can still convert the following datas into molecular structure:
(1) SMILES: Brc1ccccc1C[Mg]Br
(2) InChI: InChI=1/C7H6Br.BrH.Mg/c1-6-4-2-3-5-7(6)8;;/h2-5H,1H2;1H;/q;;+1/p-1/rC7H6Br2Mg/c8-7-4-2-1-3-6(7)5-10-9/h1-4H,5H2
(3) InChIKey: HDXZJAZTPVLPEX-NUUKLHPIAN