Cumper, Charles W. N. published the artcileElectric dipole moments of toluidines and some aminopicolines in benzene and 1,4-dioxane solution, Formula: C6H8N2, the publication is Journal of the Chemical Society [Section] B: Physical Organic (1967), 1100-3, database is CAplus.
The elec. dipole moments of the three toluidines and seven aminopicolines were calculated from measurements of the dielec. constants, sp. volumes, and refractive indexes of their solutions in benzene and in 1,4-dioxane at 25.00°. In o-toluidine, 4-amino-3-methylpyridine, and 2-amino-3-methylpyridine there is an interaction between the adjacent substituents but this is somewhat less in 3-amino-4-methylpyridine. Mesomeric moments are present in 2- and 4-aminopyridines and in the former direct interaction occurs between the amino-group and heterocyclic N atom.
Journal of the Chemical Society [Section] B: Physical Organic 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, Formula: C6H8N2.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem