Fragrance ingredient reference pages
Citrus · Green 2-Undecenal CAS 2463-77-6 Origin synthetic Note Top IFRA Use with awareness Data as of: Apr 2026 What Is 2-Undecenal? 2-Undecenal is a synthetic aldehyde used in perfumery for its intense waxy, citrusy, and slightly metallic odor. Commonly found in household cleaners and air fresheners for its powerful scent. This ingredient matters because…
Musky · Green 2-Undecanone CAS 0112-12-9 Origin synthetic Note Middle IFRA Generally safe Data as of: Apr 2026 What Is 2-Undecanone? 2-Undecanone is a synthetic fragrance ingredient with a waxy, fruity-musky odor. It’s found in some perfumes and functional fragrances like detergents. This molecule matters because it provides a clean, diffusive musk note that blends…
Citrus · Floral 2-Undecanol CAS 1653-30-1 Origin synthetic Note Top/Middle IFRA Generally safe Data as of: Apr 2026 What Is 2-Undecanol? 2-Undecanol is a synthetic alcohol used in perfumery to add fresh, citrus-like notes with a waxy undertone. You might encounter it in light floral or cologne-type fragrances. This ingredient matters because it provides a…
Citrus · Green 2-Tridecenal CAS 7774-82-5 Origin synthetic Note Top to middle IFRA Generally safe Data as of: Apr 2026 What Is 2-Tridecenal? 2-Tridecenal is a synthetic fragrance ingredient primarily used to add metallic, citrusy, and slightly waxy nuances to perfumes. It’s found in trace amounts in some citrus oils but is mostly laboratory-produced. This…
Woody · Floral 2-Tridecanone CAS 0593-08-08 Origin synthetic Note Base IFRA Generally safe Data as of: Apr 2026 What Is 2-Tridecanone? 2-Tridecanone is a synthetic ketone used in perfumery for its waxy, slightly floral odor. It’s often found in functional fragrances like detergents and air fresheners. This ingredient matters because it provides longevity and subtle…
Citrus · Floral 2-Pyrrolidinone, 1-ethenyl-, homopolymer CAS 9003-39-8 Origin synthetic Note None IFRA Professional use Data as of: Apr 2026 What Is 2-Pyrrolidinone, 1-ethenyl-, homopolymer? 1-Ethenyl-2-pyrrolidinone homopolymer is a synthetic polymer used primarily in industrial applications and specialty adhesives. It’s not commonly found in consumer products but may appear in some professional-grade formulations. This ingredient…
Green · Musky 2-Propyl heptanenitrile CAS 208041-98-9 Origin synthetic Note Top to middle IFRA Use with awareness Data as of: Apr 2026 What Is 2-Propyl heptanenitrile? 2-Propyl heptanenitrile is a synthetic fragrance ingredient used in modern perfumery to add fresh, green, and slightly metallic nuances. Consumers might encounter it in contemporary colognes and body care…
Citrus · Floral 2-Propanol, 1,1',1',1'-(1,2-ethanediyldinitrilo)tetrakis- CAS 102-60-3 Origin synthetic Note Non-aromatic IFRA Professional use Data as of: Apr 2026 What Is 2-Propanol, 1,1',1',1'-(1,2-ethanediyldinitrilo)tetrakis-? This synthetic compound is a specialized ingredient used primarily in industrial fragrance applications and chemical synthesis. Consumers rarely encounter it directly. As a chelating agent, it plays a behind-the-scenes role in stabilizing…
Floral · Sweet 2-Phenoxyethanol CAS 122-99-6 Origin synthetic Note Base IFRA Use with awareness Data as of: Apr 2026 What Is 2-Phenoxyethanol? 2-Phenoxyethanol is a synthetic fragrance ingredient commonly used as a preservative and mild fragrance component in cosmetics and personal care products. You’ll find it in perfumes, lotions, and skincare formulations where it serves…
Sweet · Balsamic 2-Pentylfuran CAS 3777-69-3 Origin synthetic Note Middle IFRA Generally safe Data as of: Apr 2026 What Is 2-Pentylfuran? 2-Pentylfuran is a synthetic aroma chemical that contributes to the smell of freshly baked bread, roasted coffee, and fried foods. It’s found naturally in small amounts in some cooked foods and is used to…
