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A heterocyclic compound has at least two different elements as a member of its ring.
The most common hetero atoms found on a cyclic ring are Oxygen (O), Nitrogen (N) and Sulphur (S).
Example: 1. Nucleic Acid that is present in the body responsible for storing and expressing genetic information, is an example of a Heterocyclic compound. 2. Essential micronutrient, Vitamins is also an example of a heterocyclic compound. The majority of drugs, pesticides, dyes, and plastics are examples of heterocyclic compounds.
Classification of Heterocyclic Compounds Based on the electronic arrangement, we can classify Heterocyclic compounds into two types: 1. Aliphatic Heterocyclic Compounds 2. Aromatic Heterocyclic Compounds