A simple organic chemical compound with a five-membered ring structure containing oxygen, found naturally in some plants and used in making plastics and other chemicals.
From Dutch 'furfurol' or related to Latin 'furfur' (bran/chaff), because furan was first discovered in furfural, which comes from heating plant materials like bran.
Furan is nature's building block—it's a five-membered ring so stable and versatile that chemists can attach almost anything to it, making it the foundation for creating new materials, which is why pharmaceutical and materials companies are investing billions in furan-based chemistry as a petroleum-free alternative.
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