Product Description Psora-4 Other Details Molecular Formula: C21H18O4 Molecular Weight: 334.4 CAS Number: 724709-68-6 Minimum Purity: 0.95 UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1mg Leadtime:50 Days Sizes 2: 5mg Leadtime:50 Days Sizes 3: 10mg Leadtime:50 Days