1,2,2,6,6-Pentamethyl-4-(beta-diethylaminoethyl)-delta(sup 3)-dehydropiperidine dimethiodide 22066-17-7 Pyridinium, 1,2,3,6-tetrahydro-1,1,2,2,6,6-hexamethyl-4-(2-(diethylmethylammonio)ethyl)-, diiodide