Methods Xanthydrol coloring method,sulfuric acid coloring method,and HPLC method were developed for determination of the release of dirithromycin enteric-coated tablets.

• 方法分别采用口占吨氢醇显色法、硫酸显色法以及高效液相色谱法测定地红霉素肠溶片的释放度,对每种方法进行方法学的研究和验证。