SEARCH Articles Figures Tables 2- Methyl- 3- propanal 2-methyl propane 3 - propane-1 sulfonic acid Crosslinked Poly(2-Acrylamido-2-Methyl Propane Sulfonic Acid) Methyl sulfone Propan acid Propane sulfone Sodium 2-acrylamido-2-methyl propane sulfonic acid