水杨酸(2,2,6,6-四甲基-4-羟基哌啶)酯的合成研究
수양산(2,2,6,6-사갑기-4-간기고정)지적합성연구
Study on Synthesis of Light Stabilizer 2,2,6,6-tetramethyl-4-piperidyl Salicylate
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