CAS 20138-79-8 appears in our catalog under these names: 2,1,3-Benzothiadiazole-4,7-dicarbonitrile, 96%, Benzo(c)(1,2,5)thiadiazole–4,7–dicarbonitrile, 2,1,3-Benzothiadiazole-4,7-dicarbonitrile, 97%, 97%, Benzo[c][1,2,5]thiadiazole-4,7-dicarbonitrile, 97%. Offered by: Combi-blocks, GLPBio, Chemat, Fluorochem. Available pack sizes: 1g, 250mg, 100mg.