Cosmetic raw material 2-ISOBUTYL-4-HYDROXY-4-METHYLTETRAHYDROPYRAN
2-Isobutyl-4-methyltetrahydro-2H-pyran-4-ol is a colorless to pale yellow liquid with a fresh, soft, and natural floral odor.
Cyclocondensation of 3-methyl-3-buten-l-ol with 3-methylbutanal on silica gel and alumina in the absence of solvents is proposed
for synthesis.The material consists of a cis/trans-isomer mixture. The proportion of the more valuable cis-isomer can be increased
by using dilute sulfuric acid as catalyst.
item | value |
Product name | 2-ISOBUTYL-4-HYDROXY-4-METHYLTETRAHYDROPYRAN |
CAS | 63500-71-0 |
MF | C10H20O2 |
Appearance | Colourless to yellowish transparent liquid |
Flavor and Odor | Floral,sweet,lily of valley |
Assay | 97%MIN |
Cis-isomer by GC | 75.0%~85.0% |
Refractive index (20℃) | 1.455~1.460 |
Relative density (25/25℃) | 0.946~0.955 |
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