Methods An HPLC method was established to determine the contents of ethambutol hydrochloride, isoniazid, pyrazinamide and rifampicin in the Yianbiqinlifuyiyan tablets.

• 方法 采用高效液相色谱法测定乙胺吡嗪利福异烟片中盐酸乙胺丁醇、利福平、异烟肼和吡嗪酰胺的含量。