Photoresist Chemicals 1H-Pyrazolo[3,4-d]pyrimidin-4-amine, N-[(1S,3S)-3-[5-[(4-methylphenyl)methyl]-1,3,4-thiadiazol-2-yl]cyclopent yl]-, monohydrochloride Cas：875899-06-2 Molecular Formula：C20H21N7S.ClH