Photoresist Chemicals 1,8-Naphthyridine-3-carboxylic acid, 1-ethyl-6-fluoro-7-(3-hydrazino-1-pyrrolidinyl)-1,4-dihydro-4-oxo-, monohydrochloride Cas:92242-58-5 Molecular Formula:C15H18FN5O3.ClH