Polyperfluoroethoxymethoxy difluoroethyl peg ether 2024년 3월 20일 L BiochemPolyperfluoroethoxymethoxy difluoroethyl peg ether에 댓글 남기기 Polyperfluoroethoxymethoxy difluoroethyl peg ether CAS # 162492-15-1 99%