Synthetics
Phenethyl isopropyl ether has no known scent.
Luebke, William tgsc, (1985): Green rose plastic metallic spicy foliage watercress
Givaudan: Green, floral, hyacinth
Petiole is a green and powerful ingredient, with floral shades of hyacinth and rose, and a hint of watercress. it gives a natural green freshness to the top-note.