Description and usage notes:
Also known as octahydrocoumarin, this IFF product is described by them as: “Very useful in preparing coumarin alternatives. More stable than coumarin. It also has a very good Tonka characteristic. Almond, Vanila, Coumarin, hay, coconut note”.
It’s also easier to handle because it’s liquid rather than the crystals of coumarin.
According to Arcadi Boix Camps this material “has a tonka, coconut fragrance, sweeter than coumarin” .