1,2,3,6-Tetrahydro-2,2,4,6,6-pentamethylpyridine hydrochloride 2,2,4,6,6-Pentamethyl-1,2,3,6-tetrahydropyridine hydrochloride 63905-93-1 Pyridine, 1,2,3,6-tetrahydro-2,2,4,6,6-pentamethyl-, hydrochloride Pyridine, 2,2,4,6,6-pentamethyl-1,2,3,6-tetrahydro-, hydrochloride