Product Description 5,7-Dihydroxy-2H-chromen-2-one Other Details Molecular Formula: C9H6O4 Molecular Weight: 178.14 CAS Number: 2732-18-5 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 100mg Leadtime:50 Days Sizes 2: 250mg Leadtime:50 Days Sizes 3: 1g Leadtime:50 Days