3,3'-Sulfonyldipropionic acid 3,3'-Sulphonyldipropionic acid 4-03-00-00735 (Beilstein Handbook Reference) 6291-88-9 BRN 1789192 EINECS 228-546-7 NSC 8167 Propanoic acid, 3,3'-sulfonylbis- Propionic acid, 3,3'-sulfonyldi-