cis-3-Hexenal-D2 is a labelled analogue of cis-3-Hexenal (H294810). cis-3-Hexenal is an unsaturated aldehyde that has a green, leafy odour and flavour. It is a volatile flavour component of olive oil, tomatoes, cis-3-Hexenal is also a precursor of cis-2-Hexenol (H295005).