CAS 1553-60-2 appears in our catalog under these names: 2-(4-Isobutylphenyl)acetic acid, 98%, 98%, Ibufenac, Ibufenac 98%, Ibufenac, 99.98%, Ibufenac (Standard). Offered by: Chemat, Mikromol, LoGiCal, GLPBio, Biosynth. Available pack sizes: 100mg, 250mg, 500mg, 1g, 5g, 10g, 25g, 50mg.