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Chemical name: 2-N-Butyl-4-Spirocyclopentane-1-[(2-Cyanobiphenyl-4-Yl)Methyl]-2-Imidazolin-5-One
Structural formula:

CAS No. : 138402-11-6
Molecular formula: C₂₅H₂₈N₆O
Molecular weight: 428.54

Specification: EP,USP,JP,CP etc.
Properties:white or off-whiter crystalline powder，tasteless，slightly soluble in ethanol，very slightly soluble in chloroform，not soluble in water，it can be dissolved in0.1NNaOH。
Assay:≥99.0%
 Related substance:<1.0%
Loss on drying:≤0.5%
Residule on ignition:<0.1% 
Heavy metal:≤0.001% 
Chloride:≤0.006%  
Ethanol:≤0.2%