CAS 20800-00-4 appears in our catalog under these names: 4,4'–Azanediyldibenzoic acid, 4,4'-Azanediyldibenzoic acid 97%, 4,4'-Azanediyldibenzoic acid, 97%, 97%, 4,4'-IMINODIBENZOIC ACID, 98%. Offered by: GLPBio, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 100mg, 250mg, 5g, 10g, 25g.