以甲基橙代替乙氧基黄叱精指示剂，用溴酸钾法测定异烟肼片含量。
The content of isoniazid in its tablets was determined by using potassium bromate method, but the indicator of ethoxychrysoidine was replaced by methyl orange.
目的建立溴芬酸钠原料中二氯甲烷、甲苯、1，2-二甲氧基乙烷、乙酸乙酯、乙醇残留量测定方法。
Objective To establish a method for detection of dichloromethane, 1,2-dimethoxyethane, toluene, ethyl acetate and ethanol in bromfenac sodium.
本文报道通过亚稳离子和精确质量测定，讨论了1，1—二氯—2—乙氧基—2—芳基烯烃的质谱裂解规律。
A study on the mass spectrometric cleavage of 1, 1—dichloro—2—ethyloxy—2—AryIolefins by metastable ions and precise mass measurement is reported.
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