Photoresist Chemicals Benzoic acid,5-bromo-2-[1-(carboxymethyl)-3-[5-[(dimethylamino)sulfonyl]-2-methylphenyl]-2-triazen-1-yl]-,sodium salt (1: ) Cas：94109-84-9 Molecular Formula：C18H19 Br N4 O6 S . x Na