2-Hydroxy-3methyl 5-nitro pyridine

Some synthetic mixes, despite the fact that not combined from pyridine, contain its ring 
structure. They incorporate B vitamins niacin and pyridoxal, the counter tuberculosis drug 
isoniazid, nicotine and other nitrogen-containing plant products.Historically, pyridine was 
2-Hydroxy-3methyl 5-nitro pyridine