CAS 1583-66-0 appears in our catalog under these names: 5–Fluoroisophthalic Acid, 5-Fluoroisophthalic acid 97%, 5-Fluoroisophthalic Acid, 98%, 98%, 5-FLUOROISOPHTHALIC ACID, 95%. Offered by: GLPBio, Ambeed, Chemat, Fluorochem. Available pack sizes: 1g, 5g, 250mg, 10g, 25g, 100mg, 50g, 100g.