2 methyl 1 butene ir spectrum July 8, 2019 16 32 64 128 2 methyl 2 butene vs 2 methyl 1 butene ir spectrum 1 chloro 3 methyl 2 butene ir spectrum 2 methyl 2 butene 2 methyl butanal 2 bromo 3 methylbutane 2 butene structure
