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Doxazosin mesylate

CAS No:77883-43-3
Shelf life:2 years
The detailed specifications are as below:

AppearanceWhite or off white crystalline powder.odourless tasteless.lightly soluble in water,methanol soulution,soluble in mixed solution of 15 volume water and 35 volume tetrahydrofuran,almost unsoluble in acetone
Identification(1)The retention time of the main peak of the supplier should be consistent with the retention time of the control peak of doxazsin mesylate.
Identification(2)The infrared absorption spectra of this product should be consistent with the control map(spectral set 733)
Related substanceEach impurity not more than 0.10%
Sum of impurities not more than 0.3%
Ethyl acetate≤0.5%
Organic solvent residueN-butanol≤0.5%
Heavy metalsNot more than 10ppm
Loss on dryingNot more than 1.0%
Methyl methanesulfonateNot more than 1900ppm(0.19%)
Residue on ignition≤0.1%
AssayNot less than 98.0%~102.0%(dried substance)