1 (2H) -Phthalazinone

1 (2H) -Phthalazinone, with CAS No. 119-39-1, is a fragment molecule that serves as an important scaffold for molecular linking, expansion, and modification. 1 (2H) -Phthalazinone provides a structural basis and research tool for the design and screening of novel drug candidates, and is commonly used in drug discovery, drug synthesis, and related research.