Appearance	White or almost white powder.
Solubility	Freely soluble in water, sparingly soluble in methanol, practically insoluble in methylene chloride.
Identification	Infrared absorption spectrophotometry corresponds to Sumatriptan succinate CRS.
PH	4.5～ 5.3
Absorbance	Maximum 0.10
Related substances
Impurity A	not more than 0.6 percent
Impurity H	not more than 0.3 percent
Impurity B,C or D	each impurity not more than 0.5 percent
Impurity E or any other impurity	each impurities not more than 0.1 percent
Total impurities	not more than 0.6 percent
Water	not more than 1.0 percent
Sulphated ash	not more than 0.1 percent
Residual solvents
Methanol	not more than 3000ppm
Acetonitrite	not more than 100ppm
Isopropyl Alcohol	not more than 100ppm
Chloroform	not more than 60ppm
Assay	97.5 percent to102.0 percent (Anhydrous substance)

CAS No. 103628-46-2

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