Product Description Selamectin Other Details Molecular Formula: C43H63NO11 Molecular Weight: 769.97 CAS Number: 220119-17-5 Minimum Purity: >98% (HPLC), powder UN Number: 0 Dangerous Goods Class: 0 Packing Group: 0 Storage Temperature: 0 Sizes 1: 1mg Leadtime:20 Days Sizes 2: 5mg Leadtime:20 Days Sizes 3: 10mg Leadtime:20 Days