Tizanidine is a synthetic imidazoline derivative and a centrally acting α2-adrenergic agonist, chemically known as 5-chloro-N-(4,5-dihydro-1H-imidazol-2-yl)-2,1,3-benzothiadiazol-4-amine. It is primarily utilized in pharmaceutical research and development as an active pharmaceutical ingredient (API) or reference standard for the synthesis and quality control of muscle relaxant medications. Tizanidine works by inhibiting motor neuron excitability in the spinal cord, reducing spasticity associated with neurological conditions. This product is supplied as a light yellow to yellow solid with a purity of 95.5-100%, confirmed by infrared spectrum and NMR spectroscopy conforming to structure. It is suitable for laboratory use in drug formulation studies, analytical testing, and as an intermediate in medicinal chemistry. Handle with care following standard chemical safety protocols, as it may cause drowsiness or hypotension in biological systems.