Pyralone
Leather · CAS 65442-31-1 · 3 suppliers
What it smells like
Isobutyl Quinoline has an intense, dry, and powerful leathery aroma with distinct earthy, rooty qualities and notable woody, mossy undertones complemented by subtle nutty facets.
At a glance
| Scent family | Leather |
| CAS number | 65442-31-1 |
| Uses | Essential for leather accords, chypre bases, and masculine fragrances; adds earthy depth and fixative properties. |
| Typical usage | 0.2% in a perfume compound |
| Longevity | Lasts > 160 hours on a smelling strip. |
| Appearance | Clear liquid |
| IUPAC name | 6-(butan-2-yl)quinoline |
IFRA usage limits (51st Amendment)
Maximum concentration in the finished consumer product, by IFRA category, drawn from official IFRA Standards and manufacturer certificates. Reference data — always confirm against the current official IFRA Standard for your application.
| Category | Application | Limit |
|---|---|---|
| Category 1 | Lip products, toys | Prohibited |
| Category 2 | Deodorants & antiperspirants | Unrestricted |
| Category 3 | Eye products, men's facial creams (fingertip) | Unrestricted |
| Category 4 | Fine fragrance, hydroalcoholic on skin | Unrestricted |
| Category 5A | Body lotion | Unrestricted |
| Category 5B | Face moisturiser | Unrestricted |
| Category 5C | Hand cream | Unrestricted |
| Category 5D | Baby cream, oil & talc | Unrestricted |
| Category 6 | Oral & lip care (toothpaste, mouthwash) | Prohibited |
| Category 7A | Rinse-off hair products | Unrestricted |
| Category 7B | Leave-on hair products | Unrestricted |
| Category 8 | Significant anogenital exposure | Unrestricted |
| Category 9 | Rinse-off body & hand (soap, shower gel) | Unrestricted |
| Category 10A | Household care, non-spray | Unrestricted |
| Category 10B | Household aerosol / spray | Unrestricted |
| Category 11A | Skin contact, minimal transfer (e.g. wipes) | Unrestricted |
| Category 11B | Skin contact, minimal transfer (e.g. fabrics) | Unrestricted |
| Category 12 | Not intended for skin contact (candles, detergents) | Unrestricted |
Where to buy
Available from 3 suppliers, from $3.95.
| Supplier | Manufacturer | Price | |
|---|---|---|---|
| Fraterworks | IFF | from $3.95 | View → |
| Perfumer Supply House | Givaudan | from $10 | View → |
| The Perfumer's Apprentice | Givaudan | from $21 | View → |
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