CAS 387350-55-2 appears in our catalog under these names: 3-(2,2-Difluoro-1,3-benzodioxol-5-yl)-(2e)-propenoic acid, 95%, (E)-3-(2,2-Difluorobenzo[d][1,3]dioxol-5-yl)acrylic Acid, 98%, 98%, 3-(2,2-Difluoro-1,3-benzodioxol-5-yl)(2E)propenoic acid, 97%, (E)-3-(2,2-Difluorobenzo[d][1,3]dioxol-5-yl)acrylic acid, 98%. Offered by: Combi-blocks, Chemat, Fluorochem, Ambeed. Available pack sizes: 1g, 5g, 10g.