2-Methylenecyclopropanecarboxaldehyde is an intermediate used in the synthesis of α-(Methylenecyclopropyl)glycine, which is a homolog of Hypoglycine A (H9782), an unusual amino acid found in Litchi chinensis seeds and is shown to have anti-mutagenic activity against spontaneous mutation of Salmonella typhimurium TA. Molecular Formula: C5H6O Molecular Weight: 82.1