Photoresist Chemicals 4H-Pyrido[1,2-a]pyrimidine-3-carboxylic acid, 6,7,8,9-tetrahydro-7-methyl-4-oxo-9-[(phenylamino)methylene]-, ethyl ester, (E)- Cas：85932-13-4 Molecular Formula：C19H21N3O3