PIPES-Na Chinese Name: piperazine-N, N '- bis (2-hydroxypropane sulfonic acid) disodium salt English Name: Piperazine-N,N'-bis(2-hydroxypropanesulphonic acid) disodium salt CAS No.: 108321-07-9 Molecular formula: C10H20N2Na2O8S2 Molecular weight: 406.38