CAS 1111177-24-2 appears in our catalog under these names: Valsartan Impurity 18 (Valsartan Desvaleryl Methyl Ester), Valsartan Impurity 25, N-((2'-(2H-Tetrazol-5-yl)(1,1'-biphenyl)-4-yl)methyl)-L-valine methyl ester. Offered by: Chemat Brand, Hubei YoungXin, TRC, Biosynth. Available pack sizes: on request, 10mg, 25mg, 50mg, 100mg, 200mg, 250mg, 1000mg.