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