CAS 7732-18-5 appears in our catalog under these names: Water, Reagent (Deionized water), ACS , Water, LC-MS Grade , Water, ultrapure, HPLC Grade , Water, RNase, DNase-free , Water, DEPC-Treated . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 1L, 4L, *4x1L, *4x4L, *6x1L, 3.8L, 500ml, 25ml.