2 6-di-tert-butylpyridine pka July 8, 2019 16 32 64 128 2 6-di-tert-butyl pyridine pka 2 6-di-tert-butyl-4-methylpyridine 2 6-di-tert-butyl-phenol 2 6-di-tert-butyl-4-methylphenol 99 2 6-di tert-butyl-4-methylphenol