1-Phenyl-3-methyl-5-pyrazolone CAS 89-25-8 Stable Reactive Pyrazolone Intermediate for Dye and Pharmaceutical Synthesis Product Overview 1-Phenyl-3-methyl-5-pyrazolone, commonly known as PMP, is a classic pyrazolone derivative with stable heterocyclic molecular structure and active chemical reactivity. This fine chemical intermediate features reliable thermal stability and excellent coupling performance. It serves as a foundational raw material widely utilized in organic