Photoresist Chemicals 2H-Pyrido[1,2-a]pyrazine-1,4(3H,6H)-dione, 9-(3,6-dioxo-1,4-cyclohexadien-1-yl)-7,8-dihydro-2-(phenylmethyl)- Cas：565418-83-9 Molecular Formula：C21H18N2O4