Chlorzoxazone is a synthetic organic compound (5-chloro-2-benzoxazolone) classified as a centrally acting muscle relaxant. It is used in pharmaceutical applications to relieve acute musculoskeletal pain by reducing muscle spasms via action on the central nervous system. As a reagent, it is supplied at 98% purity. Molecular formula: C₇H₆ClNO₂; molecular weight: 169.58 g/mol. Appearance: White to off-white crystalline powder. Soluble in acetone and ethanol; sparingly soluble in water. Not for long-term use; typically combined with rest and physical therapy.