Fragrance ingredient reference pages
Woody · Balsamic 4-Isopropylphenol CAS 99-89-8 Origin synthetic Note Middle IFRA Use with awareness Data as of: Apr 2026 What Is 4-Isopropylphenol? 4-Isopropylphenol is a synthetic aromatic compound used in industrial fragrances and disinfectants. Consumers may encounter it in household cleaners or as a minor component in some masculine colognes. This phenol derivative matters because…
Woody · Musky 4-Isopropylcyclohexanol CAS 4621-04-09 Origin synthetic Note Middle IFRA Generally safe Data as of: Apr 2026 What Is 4-Isopropylcyclohexanol? 4-Isopropylcyclohexanol is a synthetic fragrance ingredient used to add woody, earthy notes to perfumes and personal care products. You’ll encounter it in aftershaves, deodorants, and some unisex fragrances. This molecule matters because it helps…
Sweet · Balsamic 4-Hydroxybutanoic acid lactone CAS 96-48-0 Origin synthetic Note Heart IFRA Generally safe Data as of: Apr 2026 What Is 4-Hydroxybutanoic acid lactone? 4-Hydroxybutanoic acid lactone is a synthetic fragrance compound primarily used in perfumery for its unique creamy, fruity aroma. It’s found in some niche fragrances and functional products where a subtle…
Sweet · Floral 4-Hydroxyacetophenone CAS 99-93-4 Origin synthetic Note Middle IFRA Generally safe Data as of: Apr 2026 What Is 4-Hydroxyacetophenone? 4-Hydroxyacetophenone is a synthetic fragrance ingredient with a sweet, powdery, and slightly phenolic scent. It’s occasionally used in perfumes and cosmetics to add subtle floral nuances. This molecule matters because it serves as a…
Sweet · Floral 4-Hydroxy-3-pentenoic acid lactone CAS 0591-12-8 Origin synthetic Note Heart IFRA Use with awareness Data as of: Apr 2026 What Is 4-Hydroxy-3-pentenoic acid lactone? 4-Hydroxy-3-pentenoic acid lactone is a synthetic fragrance ingredient often found in fruity or creamy perfumes. It adds a subtle lactonic nuance that enhances gourmand and floral compositions. This molecule…
Green · Citrus 4-Hexen-1-ol, (4Z)- CAS 928-91-6 Origin synthetic Note Top IFRA Generally safe Data as of: Apr 2026 What Is 4-Hexen-1-ol, (4Z)-? 4-Hexen-1-ol, (4Z)- is a synthetic fragrance ingredient often used to add fresh, green notes to perfumes and scented products. You’ll encounter it in body washes, air fresheners, and some light floral perfumes….
Green · Sweet 4-Heptenal CAS 6728-31-0 Origin synthetic Note Top IFRA Use with awareness Data as of: Apr 2026 What Is 4-Heptenal? 4-Heptenal is a synthetic fragrance ingredient with a powerful green, fatty odor reminiscent of crushed leaves and cucumber. It’s found in trace amounts in some perfumes and functional fragrances. This aldehyde contributes a…
Sweet · Musky 4-Heptanone CAS 123-19-3 Origin synthetic Note Middle IFRA Generally safe Data as of: Apr 2026 What Is 4-Heptanone? 4-Heptanone is a synthetic ketone used in perfumery for its fruity, cheesy, and slightly rancid odor. It’s found in trace amounts in some dairy products and is used to create complex fragrance effects. This…
Musky · Woody 4-Cyclopentadecen-1-one, (Z)- CAS 14595-54-1 Origin synthetic Note Base IFRA Use with awareness Data as of: Apr 2026 What Is 4-Cyclopentadecen-1-one, (Z)-? 4-Cyclopentadecen-1-one, (Z)- is a synthetic musk used in high-end fragrances. Consumers encounter it in luxury perfumes and body care products where it provides a velvety, animalic depth. This ingredient matters because…
Musky · Woody 4-Cyclopentadecen-1-one CAS 35720-57-1 Origin synthetic Note Base IFRA Generally safe Data as of: Apr 2026 What Is 4-Cyclopentadecen-1-one? 4-Cyclopentadecen-1-one is a synthetic musk used in modern perfumery. It provides a clean, powdery, and slightly animalic scent that enhances longevity in fragrances. Consumers encounter it in laundry detergents, fabric softeners, and personal care…
