短语词组短语methyl l butane 甲基丁烷Iodo -3-methyl-butane 碘代异戊烷1 -Iodo-3-methyl-butane 碘代异戊烷2 -chloro--methyl butane 叔戊基氯chloro -2-methyl butane 叔戊基氯4 -amino-2-methyl butane 氨基 返回 methylbutane