Fresh, green, and slightly fruity, with a crisp pear skin character and a light apple-like juiciness. It sits between leafy green brightness and clean fruit esters, giving lift immense lift. Far less grassy than the cis-3 ester. 
Don't do your banana 🍌 without it
Unrestricted by IFRA (unlike Trans-2-Hexenal, which is still useful)