What are the physical and chemical properties of (1R,4R)-4,7,7-Trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carboxylic acid (CAS: 67111-66-4)?

(1R,4R)-4,7,7-Trimethyl-3-oxo-2-oxabicyclo[2.2.1]heptane-1-carboxylic acid (CAS: 67111-66-4) is a white, crystalline solid with a molecular weight of approximately 218.34 g/mol. It is slightly soluble in water but more soluble in organic solvents like methanol and ethanol. Chemically, it exhibits moderate reactivity, particularly in esterification and amidation reactions. It is stable under normal conditions but should be stored at room temperature, protected from moisture and light.