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Online Edition: "Specifications for Flavourings"

Flavouring 2-(2-Hydroxy-4-methyl-3-cyclohexenyl)propionic acid gamma-lactone
Synonym(s) Wine lactone; 2(3H)-Benzofuranone, 3a,4,5,7a-tetrahydro-3,6-dimethyl-
Latest JECFA evaluation 2016 (Session 82)
Status of specification Full
Chemical name 3,6-dimethyl-3a,4,5,7a-tetrahydro-1-benzofuran-2(3H)-one
JECFA number 2223
CAS number 57743-63-2
FEMA number 4140
COE number
FLAVIS number
Molecular weight 166.10
Chemical formula C10H14O2
Physical form/odour Colourless to pale yellow liquid / Sweet, spicy, woody aroma
Solubility Practically insoluble to insoluble
Solubility in ethanol Soluble
Boiling point (°C) 231-232°
Assay min % >95% (mixture of isomers)
Acid value max
Refractive index 1.490-1.496
Specific gravity 1.065-1.071
Other requirements Isomeric composition: 81-84% (3aS,7aR), 16-19% (3aR, 7aS)
ID Test MS, IR, NMR
Spectrum