Hi All. I've developed a method for methyl bromide via direct injection, however I am attempting to develop a new method that will be able to perform OVI as well. I have chosen DMSO as solvent, and I am seeing two peaks.

My question is, what does MeBr and DMSO react to form? My guess is MeOH, but could dimethyl ether be possible? And what role would acetic acid play in this? I have toyed around with added acetic acid to help with sample solubility and I see one peak grow (I think non MeBr) while the other gets smaller.

Any thoughts would be great!