CAS 108321-07-9 appears in our catalog under these names: POPSO, 0.2M buffer soln., pH 8 , POPSO disodium salt, 99.00%, 3,3'-(Piperazine-1,4-diyl)bis(2-hydroxypropane-1-sulfonic acid), disodium salt, POPSO (sodium). Offered by: Thermo Scientific (Alfa Aesar), Chemat, MedChemExpress. Available pack sizes: 250ml, 100g, 25g, Get quote.