3-Methyl-2-pyrazolin-5-one

3-Methyl-2-pyrazolin-5-one, with CAS No. 108-26-9, is a fragment molecule that serves as an important scaffold for molecular linking, expansion, and modification. 3-Methyl-2-pyrazolin-5-one 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.