What is 1H-Pyrrolo[2,3-b]pyridine (CAS: 271-63-6)?

1H-Pyrrolo[2,3-b]pyridine (CAS: 271-63-6) is a heterocyclic organic compound with the chemical formula C5H5N2. It features a fused ring structure combining a pyrrole and pyridine ring, making it a key intermediate in pharmaceutical and chemical synthesis. This compound is known for its aromaticity and potential applications in drug development. Its physical properties include a colorless solid appearance and limited solubility in water, though it dissolves in polar organic solvents. The molecule is widely studied for its biological activity and structural versatility in chemical research.