CAS Registry Number

CAS 7365-45-9 — HEPES (4-(2-Hydroxyethyl)piperazine-1-ethanesulfonic acid)

HEPES is a zwitterionic buffering agent commonly used in biological and biochemical applications to maintain stable pH conditions. It is particularly effective in the pH range of 6.8 to 8.2 and is widely used in cell culture, electrophoresis, and enzyme assays. Available in powder form with a molecular weight of 238.31 g/mol, CAS number 7365-45-9, and molecular formula C8H18N2O4S, HEPES is stable at ambient storage conditions. Molekula supplies HEPES from research to bulk quantities with full documentation and ISO 9001:2015 traceability.