In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Synthesis of new proton-pump inhibitors, published in 1996-06-30, which mentions a compound: 84547-64-8, mainly applied to antiulcer agent pyrazole derivative preparation, Category: amides-buliding-blocks.
For development new anti-ulcer agents, we synthesized omeprazole analogs, in which pyridine group was replaced by pyrazole moiety, to increase pharmacol. activity and to decrease side effects, and also synthesize substituted benzimidazole rings.
Although many compounds look similar to this compound(84547-64-8)Category: amides-buliding-blocks, numerous studies have shown that this compound(SMILES:CN1N=C(CCl)C=C1), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics