Study on the Synthesis of 2 - ( 2-Thi azo lyl - azo ) - 5 - ( Sulfomethylamino ) Benzoic Acid and Its Analytical Behaviour
2-（2-噻唑偶氮）-5-（磺甲胺基）苯甲酸的合成及其分析性质的研究
lyl