isoprene
/ˈaɪsəʊpriːn/noun
mass noun
1- Chemistry a volatile liquid hydrocarbon obtained from petroleum, whose molecule forms the basic structural unit of natural and synthetic rubbers【化】异戊二烯。
1.1
- Chem. formula: CH2=C(CH3)CH=CH2化学分子式：CH2=C(CH3)CH=CH2.
词源
mid 19th cent.: apparently from ISO- 'equal' + pr(opyl)ene.