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抗组胺药具有阳离子性。在适当条件下,它与阴离子性染料结合成有色的疏水性盐类,经有机溶剂提取,可在特定波长下测定其含量。对马来酸朴
Antihistamines are cationic. Under appropriate conditions, it is combined with anionic dyes into colored hydrophobic salts, extracted by organic solvents, and its content can be determined at a specific wavelength. Paleo maleic acid