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Structure of 4-Methylpent-2-enal is

1. CH 3 – CH 2 – C = CH – C – H CH 3 O
2. CH 3 – CH – CH = CH – C – H CH 3 O
3. H 2 C=C – CH – CH 2 – C – H H O H CH 3
4. CH 3 – CH 2 – CH = C – C – H O CH 3

Correct answer: CH 3 – CH – CH = CH – C – H CH 3 O

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