Photoresist Chemicals Benzenesulfonamide, N-[4-chloro-2-(4-pyridinylcarbonyl)phenyl]-4-[(4R,5S)-2,4,5-trimethyl-1,3 -dioxolan-2-yl]-, rel- Cas：870535-13-0 Molecular Formula：C24H23ClN2O5S