1,2,2,6,6-Pentamethylpiperidine p-toluenesulfonate 6152-93-8 Piperidine, 1,2,2,6,6-pentamethyl-, 4-methylbenzenesulfonate Piperidine, 1,2,2,6,6-pentamethyl-, p-toluenesulfonate Pirilen Pirilen p-tosylate Pirilenum Pyrilen Pyrilene p-toluenesulfonate