We investigated the formation of ketene from CBN-OAc, ∆ 8 -THC-OAc and CBD-(OAc)2 initially under "dabbing" conditions. Dabbing involves flash vaporization on a hot surface and exposes users to relatively large volumes of aerosol. Unlike the use of vape cartridges, dabbing is less impacted by sample viscosity, thereby enabling pure cannabinoids to be efficiently vaped without the need for confounding viscosity-modifying additives. CBN-OAc was used for the initial studies as it produces fewer degradation products upon vaping compared to other cannabinoids, and should therefore afford relatively cleaner NMR spectra. The quartz nail was set to a temperature of 378 ⁰C. The condensate from vaped CBN-OAc was collected in an impinger filled with CDCl3 for seamless transfer to an NMR tube and quantitative NMR (qNMR) analysis.