(+-)-(3E,3'E)-(p-Phenylenedimethylidyne)bis(2-oxo-10-bornanesulfonic acid) 3,3'-(1,4-Phenylenedimethylidyne)bis(7,7-dimethyl-2-oxobicyclo(2.2.1)heptane-1-methanesulfonic acid) 92761-26-7 Bicyclo(2.2.1)heptane-1-methanesulfonic acid, 3,3'-(1,4-phenylenedimethylidyne)bis(7,7-dimethyl-2-oxo-, (1S-(1alpha(1R*,4R*),4beta))- Ecamsule [USAN] Mexoryl SX