Xylyl bromide

Xylyl-bromide, also known as methylbenzyl bromide or T-stoff ('substance-T'), is any member or a mixture of organic chemical compounds with the molecular formula C₆H₄(CH₃)(CH₂Br). The mixture was formerly used as a tear gas and has an odor reminiscent of lilac.^[1] All members and the mixture are colourless liquids, although commercial or older samples appear yellowish.