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- When 3-aminopyridine (Reilly Tar and Chemical Co.) was used without sublimation, the initial acid solution of the heterocycle was deep purple. The yields were not affected by the purity of the 3-aminopyridine
- Loev , B. and Goodman , M. M. 1967 . Chem. Ind. , : 2026 If dry column chromatography was not performed, the 3,3′-azoxypyridine was yellow-orange needles after two recrystallizations, m. p. 127–128°C
- The following numbering system was used during the analysis of both the proton and carbon NMR spectra: