Fragrance ingredient reference pages
Sweet · Floral 4-Hydroxybenzaldehyde CAS 123-08-0 Origin synthetic Note Heart IFRA Use with awareness Data as of: Apr 2026 What Is 4-Hydroxybenzaldehyde? 4-Hydroxybenzaldehyde is a synthetic fragrance ingredient with a sweet, floral, and slightly phenolic character. It’s commonly used in perfumes and flavorings to add depth and complexity. This molecule matters because it serves as…
Green · Citrus 3-Methylbutyraldehyde CAS 590-86-3 Origin synthetic Note Top IFRA Use with awareness Data as of: Apr 2026 What Is 3-Methylbutyraldehyde? 3-Methylbutyraldehyde is a synthetic aroma chemical that creates a powerful, fruity-green odor. You’ll encounter it in fragrances and some flavored products. This ingredient matters because it adds a crisp, apple-like top note that…
Green · Citrus 3-Methylbut-3-en-1-ol CAS 763-32-6 Origin synthetic Note Top to mid IFRA Generally safe Data as of: Apr 2026 What Is 3-Methylbut-3-en-1-ol? 3-Methylbut-3-en-1-ol is a synthetic fragrance ingredient used to add fresh, green, and slightly fruity nuances to perfumes. It’s commonly found in modern floral and citrus fragrances. This molecule matters because it provides…
Green · Floral 3-Methyl-2-buten-1-ol CAS 556-82-1 Origin synthetic Note Top to Middle IFRA Use with awareness Data as of: Apr 2026 What Is 3-Methyl-2-buten-1-ol? 3-Methyl-2-buten-1-ol is a synthetic fragrance ingredient with a fresh, green, slightly floral aroma. It’s often used in perfumes, soaps, and household products to add a natural, leafy character. This molecule matters…
Green · Woody 3-Butylidenephthalide CAS 0551-08-06 Origin synthetic Note Middle IFRA Use with awareness Data as of: Apr 2026 What Is 3-Butylidenephthalide? 3-Butylidenephthalide is a synthetic fragrance compound used in perfumery to create unique aromatic profiles. It’s not commonly encountered in everyday products but may appear in niche fragrances. This ingredient matters because it offers…
Woody · Spicy 3,4-Dimethylthiophene CAS 632-15-5 Origin synthetic Note Middle IFRA Use with awareness Data as of: Apr 2026 What Is 3,4-Dimethylthiophene? 3,4-Dimethylthiophene is a synthetic sulfur-containing compound used in specialty fragrances. It’s found in trace amounts in some roasted foods and coffee, contributing to their complex aromas. This ingredient matters because it adds a…
Woody · Balsamic 2-tert-Butyl-p-cresol CAS 2409-55-4 Origin synthetic Note Base IFRA Use with awareness Data as of: Apr 2026 What Is 2-tert-Butyl-p-cresol? 2-tert-Butyl-p-cresol is a synthetic aromatic compound used as a fixative in perfumes and industrial applications. You might encounter it in leathery or woody fragrances where it adds stability. This ingredient matters because it…
Floral · Green 2-Phenylhexanenitrile CAS 3508-98-3 Origin synthetic Note Top to middle IFRA Generally safe Data as of: Apr 2026 What Is 2-Phenylhexanenitrile? 2-Phenylhexanenitrile is a synthetic fragrance ingredient used in modern perfumery to create fresh, floral, and slightly metallic scents. You’ll encounter it in laundry detergents, fabric softeners, and some contemporary perfumes. This molecule…
Musky · Sweet 2-Methylhexanoic acid CAS 4536-23-6 Origin synthetic Note Heart to base IFRA Use with awareness Data as of: Apr 2026 What Is 2-Methylhexanoic acid? 2-Methylhexanoic acid is a synthetic fragrance ingredient used to add fruity, cheesy, or sweaty nuances to perfumes. It’s found in trace amounts in some dairy products and body odor….
Musky · Woody 2-Methyldecanenitrile CAS 69300-15-8 Origin synthetic Note Middle to base IFRA Use with awareness Data as of: Apr 2026 What Is 2-Methyldecanenitrile? 2-Methyldecanenitrile is a synthetic fragrance ingredient primarily used in perfumery for its unique olfactory properties. Consumers may encounter it in niche perfumes and modern fragrance compositions. This molecule matters because it…
