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己内酯,内酯

6己内酯现货502443
6己内酯现货502443ε-己内酯
ε-己内酯丙位己内酯
丙位己内酯己内酯2甲基丙烯酰氧基乙酯caprolactone2methacryloyloxyethylester
己内酯2甲基丙烯酰氧基乙酯caprolactone2methacryloyloxyethylesterps2-pl-pcl-peg-pcl,双聚己内酯peg
ps2-pl-pcl-peg-pcl,双聚己内酯peg
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