2,3,5,6-tetrahydrobenzo[1,2-b:5,4-b']difuran; CAS No.: 57052-75-2. ChemShuttle is a trusted provider of cycle compounds, including 2,3,5,6-tetrahydrobenzo[1,2-b:5,4-b']difuran for pharmaceutical and material science research. Our chemical synthesis company excels in custom synthesis, offering high-purity Building Blocks for complex synthetic pathways.