CAS 172921-32-3 appears in our catalog under these names: 2，5–Difluoro–4–nitrobenzonitrile, 2,5-Difluoro-4-nitrobenzonitrile, 2,5-Difluoro-4-nitrobenzonitrile 95%, 2,5-Difluoro-4-nitrobenzonitrile, 98%, 98%, 2,5-Difluoro-4-nitrobenzonitrile, 97%. Offered by: GLPBio, Biosynth, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 250mg, 5g, 10g, 100mg, 25g.