Shibata, Katsumi published the artcileNiacin activity of 3-cyanopyridine, pyridine 3-sulfonic acid, nicotinic acid N-oxide, and 6-hydroxynicotinic acid in rats, Application In Synthesis of 636-73-7, the publication is Bitamin (1995), 69(7), 357-64, database is CAplus.
Niacin activity of the niacin related compounds such as 3-cyanopyridine, pyridine 3-sulfonic acid, nicotinic acid N-oxide, and 6-hydroxynicotinic acid was investigated using rats. 3-Cyanopyridine, pyridine-3-sulfonic acid, and 6-hydroxynicotinic acid had not only niacin activity but also the antagonistic activity. Nicotinic acid N-oxide had niacin activity and the relative niacin activity to nicotinic acid was about 1/2 in molar ratio.
Bitamin published new progress about 636-73-7. 636-73-7 belongs to pyridine-derivatives, auxiliary class Pyridine,Sulfonic acid, name is Pyridine-3-sulfonic acid, and the molecular formula is C14H10O4S2, Application In Synthesis of 636-73-7.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem