The compound has 4 carbons with aldehyde group at C1 and double bond at C2. IUPAC name: But-2-enal. Crotonaldehyde is common name.
Which of the following is the IUPAC name of CH₃-CH=CH-CHO?
JEE Main 2023 — Chemistry Organic Chemistry
Which of the following is the IUPAC name of CH₃-CH=CH-CHO?
Verified 30 May 2026.
Options
- A
But-2-enal
- B
But-3-enal
- C
Crotonaldehyde
- D
Butanal
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