Photoresist Chemicals Benzoic acid, 4-[[4-(hydroxymethyl)-1-piperidinyl]methyl]-, 2-(5-bromo-2-cyano-4-pyrimidinyl)-2-(cyclopentylmethyl)hydrazide 2,2,2-trifluoroacetate (1:1) Cas:928148-09-8 Molecular Formula:C25H31BrN6O2.C2HF3O2