The Magnesium,chloro[(4-methylphenyl)methyl]-, with the CAS registry number 29875-07-8, has the systematic name of chloro-(p-tolylmethyl)magnesium. It belongs to the following product categories: Alkyl; Grignard Reagents; Organometallic Reagents. And the molecular formula of the chemical is C₈H₉ClMg.

The characteristics of Magnesium,chloro[(4-methylphenyl)methyl]- are as followings: (1)#H bond acceptors: 0; (2)#H bond donors: 0; (3)#Freely Rotating Bonds: 2. 

You should be cautious while dealing with this chemical. It is a kind of highly flammable chemical which may form explosive peroxides and cause burns. What's more, it reacts violently with water, and it is harmful if swallowed. Therefore, you had better take the following instructions: Wear suitable protective clothing, gloves and eye/face protection, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; Take precautionary measures against static discharges; In case of accident or if you feel unwell, seek medical advice immediately (show label where possible).

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: Cc1ccc(C[Mg]Cl)cc1
(2)InChI: InChI=1/C8H9.ClH.Mg/c1-7-3-5-8(2)6-4-7;;/h3-6H,1H2,2H3;1H;/q;;+1/p-1/rC8H9ClMg/c1-7-2-4-8(5-3-7)6-10-9/h2-5H,6H2,1H3
(3)InChIKey: SAKYCLWKOWGTFT-WRKHAVDVAG