Deady, Leslie W. published the artcileSubstituent effects on the isomer ratios in the rearrangement of some 2- and 4-nitraminopyridines, SDS of cas: 18437-58-6, the publication is Australian Journal of Chemistry (1982), 35(10), 2025-34, database is CAplus.
The preparation and rearrangement in 92% H2SO4 of I–III (R = H, Me, MeO, Br, Cl, CO2H) were investigated. The product isomer ratios can be explained by differential electronic stabilization of the appropriate σ complexes for aromatic nitration and steric effects seem relatively unimportant. Deuteration [3-D in I, R = Me] had no effect on the product distribution.
Australian Journal of Chemistry published new progress about 18437-58-6. 18437-58-6 belongs to pyridine-derivatives, auxiliary class Pyridine,Amine, name is 4-Amino-2-picoline, and the molecular formula is C6H8N2, SDS of cas: 18437-58-6.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem