CAS 1897-41-2 appears in our catalog under these names: Tetrachloroterephthalonitrile, >95% (HPLC), Tetrachloroterephthalonitrile, Tetrachloroterephthalonitrile, >98.0%(GC), 2,3,5,6-Tetrachloroterephthalonitrile 97%, 2,3,5,6-Tetrachloroterephthalonitrile, 97%. Offered by: TRC, GLPBio, TCI, Ambeed, Fluorochem. Available pack sizes: 100g, 25g, 5g, 500g, 1000g.