Product name：2,2-dimethyl-5-(1-methylethylidene)-1,3-dioxane-4,6-dione 

CAS: 2231-66-5 

Purity: ≥98.0%. 

Molecular Formula: C₉H₁₂O₄

Molecular Weight: 184.19 

Melting Point: 128°C (ethanol). 

Storage conditions: 2-8 °C 

Appearance: white or off-white powder 

Uses: Pharmaceutical intermediates