VX-809 25MG. VX-809, CAS: 936727-05-8, MF: C24H18F2N2O5, MW: 452. 41, Purity: greater than or equal to 98%, Appearance: White to off-white solid, Synonym: 3-(6-(1-(2, 2-difluorobenzo[d][1, 3]dioxol-5-yl)cyclopropanecarboxamido)-3-methylpyridin-2-yl)benzoic acid Lumacaftor, Size: 25MG