2-trans-Dodecenal

At a glance

Trans‑2‑dodecenal is a C12 unsaturated aldehyde occurring naturally in citrus fruits, herbs and vegetable fats; it has a citrusy‑fatty, waxy, mandarin‑orange aldehydic scent used in trace aldehydic, citrus and oriental‑floral perfume accords.

Category
⚗️ Synthetic
Origin
citrus fruits, herbs, vegetable fats
Extraction
Chemical synthesis
Chemical family
Aldehyde
CAS number
20407-84-5
IFRA status
Restricted -- max 0.043% in Category 4
● drafted · last checked 2026-09-01