The Magnesium,chloro[(3-methoxyphenyl)methyl]-, with the CAS registry number 26905-40-8, is also known as 3-Methoxybenzylmagnesium chloride. It belongs to the product categories of Alkyl; Grignard Reagents; Organometallic Reagents. This chemical's molecular formula is C₈H₉ClMgO and molecular weight is 180.91. What's more, its systematic name is chloro-[(3-methoxyphenyl)methyl]magnesium. It should be sealed and stored in a cool and dry place.

When you are using this chemical, please be cautious about it as the following:
It is highly flammable, so you should keep it away from sources of ignition - No smoking. This chemical will react violently with water, and may form explosive peroxides. It is harmful if swallowed. It can cause burns. It has a limited evidence of a carcinogenic effect. You should not breathe gas/fumes/vapour/spray (appropriate wording to be specified by the manufacturer). In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection. In case of accident or if you feel unwell, you must seek medical advice immediately (show the label where possible).

You can still convert the following datas into molecular structure:
(1)SMILES: COc1cc(C[Mg]Cl)ccc1
(2)InChI: InChI=1S/C8H9O.ClH.Mg/c1-7-4-3-5-8(6-7)9-2;;/h3-6H,1H2,2H3;1H;/q;;+1/p-1
(3)InChIKey: ZPCUEMLXJGELGI-UHFFFAOYSA-M