[3492-44-2] C2H4Br2O (MW 203.86) InChI = 1S/C2H4Br2O/c1-5-2(3)4/h2H,1H3 InChIKey = HDMDJEKUPKOGNK-UHFFFAOYSA-N (brominating reagent, reagent to effect conversions at the anomeric center of carbohydrates) Physical Data: bp 32–33 °C/13 mm Hg. Solubility: soluble in most common organic solvents; reacts vigorously with alcohols. Form Supplied in: commercially not available. Preparative Methods: from methyl formate and catechyl phosphorus tribromide.1 Purification: distillation. Handling, Storage, and Precautions: dibromomethyl methyl ether is very reactive and moisture sensitive; redistilled product can be kept in flame-sealed glass tubes at −10 °C for several months.2 It is a lachrymator and a suspect carcinogen. Handle in well-vented fume hood. Conversions effected by DBMME normally require presence of a Lewis acid. For this purpose, ZnBr2, ZnCl2, and BF3 etherate have been used most frequently.