Alkyl side-chains could be oxidized to benzoic acid (or maybe a benzoic acid spinoff if there are other groups existing on the ring) by potassium permanganate (KMnO4) as long as the benzylic carbon has at least 1 hydrogen attached. – addition on an alkene, it’s common to draw the two https://andersondtkar.blogzet.com/details-fiction-and-what-schedule-is-bromazolam-52372163