455264-70-7
1-ethoxyspiro[3.4]octa-1,6-dien-3-one
→
~64%
571152-28-8
螺[3.4]-6-辛烯-1,3-二酮
3744-80-7
cyclopent-3-ene-1-carbonyl chloride
7686-77-3
3-环戊烯甲酸