C
18
H
18
化学式
C
18
H
18
（分子量 234.3 g/mol）可能指：
[18]轮烯
CAS：
2040-73-5
惹烯
CAS：
483-65-8
同系物导航
C
18
H
20
C
17
H
16
C
18
H
18
C
19
H
20
C
18
H
16
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