Photoresist Chemicals Pyrrolo[1,2-a]pyrazine-7-carboxylic acid, 1,2,3,4-tetrahydro-8-methyl-1-oxo-2-(phenylmethyl)-, 1,2,2-trimethylpropyl ester Cas：880876-94-8 Molecular Formula：C22H28N2O3