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磺胺类药物的含量测定

磺胺类药物的含量测定. 磺胺类药物含量测定. 1. 亚硝酸钠滴定法 反应原理: 几乎所有的结构中含芳香第一胺基或潜在的芳香第一胺基的药物均可用亚硝酸钠滴定法测定含量。利用芳香第一胺基在酸性溶液中与亚硝酸钠定量地完成重氮化反应而生成重氮盐。. 磺胺类药物含量测定. 磺胺甲噁唑的含量测定: 取本品约 0.5g ,精密称定,加盐酸溶液( 1→2 ) 25ml ,再加水 25mll ,振摇使溶解,照永停滴定法,用亚硝酸钠滴定液( 0.1mol/L) 滴定。每 lml 亚硝钠滴定液( 0.lmol/L) 相当于 25.33mg 的 C 10 H 11 N 3 O 3 S 。.

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磺胺类药物的含量测定

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  1. 磺胺类药物的含量测定

  2. 磺胺类药物含量测定 1.亚硝酸钠滴定法 反应原理: 几乎所有的结构中含芳香第一胺基或潜在的芳香第一胺基的药物均可用亚硝酸钠滴定法测定含量。利用芳香第一胺基在酸性溶液中与亚硝酸钠定量地完成重氮化反应而生成重氮盐。

  3. 磺胺类药物含量测定 磺胺甲噁唑的含量测定: 取本品约0.5g,精密称定,加盐酸溶液(1→2)25ml,再加水25mll ,振摇使溶解,照永停滴定法,用亚硝酸钠滴定液(0.1mol/L)滴定。每lml亚硝钠滴定液(0.lmol/L)相当于25.33mg的C10H11N3O3S。

  4. 2.紫外分光光度法 多数磺胺类药物在紫外光区有紫外吸收,故可用紫外分光光度法进行含量测定。《中国药典》2010年版规定,用分光光度法测定磺胺类药物片剂的溶出度;用双波长分光光度法测定磺胺类药物复方制剂的含量。

  5. 3.高效液相色谱法 《中国药典》2010年版用高效液相色谱法测定磺胺类药物的复方制剂的含量。

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