Structural formula:

Molecular formula: C₁₆H₂₃NO·HCL
Molecular weight: 281.83
Property: It is white crystal powder with foreign odor, easily soluble in water and ethanol, slightly soluble in acetone, almost insoluble in benzene or aether.
Specification:
A. National drug standard WS-10001-(HD-1072)-2002
    Appearance:white or similar to white crystal powder
    Assay: Not less than 99.0%
    Melting point:174-178
    Loss on drying: Not more than 0.5%
    Residue on ignition: Not more than 0.1%
    Acidity:4.5~5.5
    Heavy metals: Not more than 10ppm
    Clarity:clear
   B:Accord with Japan Pharmacopoeia 14th edition
   Appearance:A white crystalline powder.
   Assay: Not less than 98.5
   PH:4.5~5.5
   Melting point:167~174
   Reidue on ignition: Not more than 0.1%
   Loss on drying:Not more than 0.5%
   Sulphated ash:Not more than 0.1%
Use:It is a central muscle relaxant suitable for cerebral arteriosclerosis,cerebrovascular accident.
Registered number of approval: National drug standard H37023404