CAS 3753-81-9 appears in our catalog under these names: 1,3–Bis(p–carboxy–phenoxy)propane, 4,4'-(Propane-1,3-diylbis(oxy))dibenzoic acid 95%, 1,3-BIS(P-CARBOXYPHENOXY)PROPANE, 1,3-Bis(4-carboxyphenoxy)propane, 95%, 95%, 1,3-Bis(p-carboxy-phenoxy)propane, 98%. Offered by: GLPBio, Ambeed, Sigma-Aldrich, Chemat, Fluorochem. Available pack sizes: 5g, 100mg, 250mg, 1g.