Test Items
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Test Specification
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Typical Test Result
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Appearance
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White off-white crystalline powder
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Off-white crystalline powder
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Melting point
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234.0℃ - 236.0℃
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234.5℃ - 235.5℃
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Loss on drying
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≤ 0.5%
|
0.05%
|
|
Methanol: ≤ 0.3%
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0.07%
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Dichloromethane: ≤ 0.06%
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Not detected
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|
Related substance
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A: methyl-3-methylflavone-8-carboxylate: ≤ 0.10%
|
0.06%
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B: 3-methyl-6-bromoflavone-8-carboxylic acid: ≤ 0.10%
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0.02%
|
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Total impurities: ≤ 1.0 %
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Conform
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Pd ( ICP-MS )
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≤ 10ppm
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<1ppm
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Assay ( HPLC )
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≥ 99.0%
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99.7%
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