Pyralone (Givaudan) AC
Pyralone (CAS 65442-31-1) is a fragrance from Givaudan with a powerful leathery, green and woody character .
Dosage: Usually used in concentrations of 0.1% to 2% in perfumes.
In leather or tobacco accords it can be slightly higher, depending on the desired effect.
Fragrance Durability: Very long lasting – lasts up to 5 days on a fragrance strip.
Strength: Very powerful – only a small amount is needed to dominate or support a composition.
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It is often used in chypre, fougère and tobacco accords .
Compared to other quinolines, Pyralone is more aromatic, smoother and more tobacco-like , with less of that dry, earthy undertone.Comparison Table
Property Isobutyl Quinoline-2 (CAS 93-19-6) Butyl Quinoline Secondary (CAS 65442-31-1 / 67634-06-4) Pyralone (CAS 65442-31-1) Structure Substitution at position 2 Mixture of 6- and 8-substituted isomers Refined 6-sec-butylquinoline Odor Profile Leathery, mossy, woody, oily-soft Earthy, green, rooty, animalic Leathery, green, tobacco-like Strength Very strong Strong Very strong Longevity 5+ days on blotter 4–5 days 5+ days Usage Chypre, fougère, vintage leather Leather, tobacco, green accords Leather, tobacco, chypre
IFRA Restrictions (English)
IFRA Category Permitted Use Category 1 (Lip products, toys) ❌ Not permitted Category 6 (Oral care products) ❌ Not permitted Categories 2 to 12 (All others) ✅ No restrictions Based on the official IFRA Certificate of Conformity provided by Givaudan
| Characteristic | Dutch 🇳🇱 | German 🇩🇪 | English 🇬🇧 |
|---|---|---|---|
| CAS number | 65442-31-1 | 65442-31-1 | 65442-31-1 |
| Chemical name | 6-(1-Methylpropyl)quinoline | 6-(1-Methylpropyl)quinolin | 6-(1-Methylpropyl)quinoline |
| Appearance | Light yellow liquid | Light yellow fluidity | Pale yellow liquid |
| Fragrance profile | Leathery, green, woody | Hollow, green, hollow | Leathery, green, woody |
| Boiling point | ~288 °C | ~288 °C | ~288 °C |
| Vapor pressure (at 20 °C) | 0.0013 hPa | 0.0013 hPa | 0.0013 hPa |
| Usage quantity | Traces up to 2% | Traces up to 2% | Traces up to 2% |
| Tenacity on blotter | Up to 5 days | Up to 5 days | Up to 5 days |
| Applications | Chypre, fougère, leather, tobacco | Chypre, Fougere, Leather, Tobacco | Chypre, fougère, leather, tobacco |
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