Product Description Benzo-12-crown-4 Other Details Molecular Formula: C12H16O4 Molecular Weight: 224.25 CAS Number: 14174-08-4 Minimum Purity: 98% (GC) UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1g Leadtime:20 Days Sizes 2: 5g Leadtime:20 Days Sizes 3: 0 Leadtime:0