Helional is a premium fragrance compound with fresh watermelon-like and floral notes resembling lily-of-the-valley and heliotrope. This aromatic aldehyde exhibits a boiling point of 282°C (lit.), density of 1.162 g/mL at 25°C, and refractive index of 1.5335 (n20/D). As a key ingredient in perfumery, it provides long-lasting green-floral accords and is widely used in jasmine-type, fougère, and marine fragrance compositions (up to 20% in formulations). The compound should be stored in airtight containers at 2-8°C under inert gas. Safety precautions include avoiding direct contact (GHS Category 2 irritation).
