CAS 20074-67-3 appears in our catalog under these names: 3，4，5，6–Tetrachlorpyridazin, Tetrachloropyridazine, Perchloropyridazine 95%, Perchloropyridazine, 95%. Offered by: GLPBio, Biosynth, Ambeed, Fluorochem. Available pack sizes: 1g, 250mg, 5g, 10g, 25g.