Isobutavan
Aroma Chemical Base Note CAS 20665-85-4
Sweet, creamy vanilla with a white chocolate and praline character and a soft apricot, cream soda facet. It adds a smooth gourmand sweetness to oriental and woody accords.
Odor profile
| Note | Base Note |
| Descriptor 1 | Gourmand |
| Descriptor 2 | Vanilla |
| Descriptor 3 | Creamy |
| Odor Impact1 | 100 |
| Tenacity2 | 400 h |
1 Source: PerfumersWorld
2 Source: The Good Scents Company
Identification
| CAS Number | 20665-85-4 |
| INCI Name | 4-formyl-2-methoxyphenyl isobutyrate |
| Category | Aroma Chemical |
| Formula | C12H14O4 |
| Mol. Weight | 222.24 |
| IUPAC Name | (4-formyl-2-methoxyphenyl) 2-methylpropanoate |
| InChIKey | BGKAKRUFBSTALK-UHFFFAOYSA-N |
Synonyms
Vanillin isobutyrate; iso butavan; iso butyl lignate; iso butyric acid ester with vanillin; iso butavan (Givaudan); 4-formyl-2-(methyloxy)phenyl 2-methylpropanoate; 4-formyl-2-methoxyphenyl 2-methylpropanoate; 4-formyl-2-methoxyphenyl isobutyrate; (4-formyl-2-methoxyphenyl) 2-methylpropanoate; 4-hydroxy-3-methoxybenzaldehyde 2-methyl propionate; 4-hydroxy-3-methoxybenzaldehyde isobutyrate; 4-hydroxy-m-anisaldehyde 2-methylpropionate; 4-hydroxy-m-anisaldehyde isobutyrate; 4-hydroxy-meta-anisaldehyde 2-methyl propionate; 4-hydroxy-meta-anisaldehyde isobutyrate; 3-methoxy-4-isobutyryl benzaldehyde; 2-methyl propanoic acid 4-formyl-2-methoxyphenyl ester; propanoic acid, 2-methyl-, 4-formyl-2-methoxyphenyl ester; vanillin iso butyrate; vanillin isobutyrate natural; vanillinisobutyrate
Physical and chemical data
| Boiling Point | 165.5 °C @ 2 mmHg |
| Flash Point | 174 °C |
| Density | 1.11 |
| Refractive Index | 1.522 |
| Vapor Pressure | 0.001000 mmHg @ 25.00 C. (est) |
| LogP | 2.1 |
| Solubility | insoluble in water; soluble in organic solvents, oils |
| Appearance | Liquid |
Regulatory status
EU allergen declaration
| Substance | Share |
|---|---|
| Vanillin | 2 % |
Substances that must be named in the ingredient list under Annex III of Regulation (EC) 1223/2009, as amended by Regulation (EU) 2023/1545. Where a range was given, the upper bound is shown.
All figures on this page are guide values collected from public reference works and supplier declarations. They differ between batches, origins and qualities. The data sheet of your own supplier is always the authoritative document for the material you actually use.