An aromatic organic compound containing fused benzene and naphthalene rings with a hydroxyl group, used in dyes and pharmaceuticals.
Combines 'benzo-' (benzene) with 'naphthalene' and '-ol' (hydroxyl group suffix). Created as chemists synthesized larger polycyclic aromatics in the 19th-20th centuries.
Benzonaphthol dyes were actually crucial in the development of synthetic textiles—chemists discovered that these fused-ring structures created vibrant, permanent colors that wouldn't wash out, transforming the fashion industry forever.
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