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Ketotifen
Name:Ketotifen
CAS NO.34580-13-7
M.F:C19H19NOS
M.W:309.43
Appearance:White powder 


The detailed specifications are as below:

Item of testing  Inspection Standard
Characteristics Yellow crystalline powder
Melting point 152~157℃
Loss on drying ≤0.5%
Related substances ≤1.0%
Suiphated ash ≤0.1%
Assay ≤98.5%