5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one
5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 103755-57-3) is a heterocyclic organic compound with the molecular formula C9H9N3O and a molecular weight of 175.19 g/mol. This pyrazolone derivative serves as a valuable building block in chemical synthesis, particularly within the realm of heterocyclic chemistry. Its structure lends itself to further functionalisation, making it a useful intermediate for the development of more complex molecular architectures.
- Synonyms
- C9H9N3O5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one

Chemical Synthesis Intermediate
Utilised as a key intermediate in the synthesis of diverse organic molecules. Its reactive amine and pyrazolone functionalities allow for various coupling and derivatisation reactions.
Heterocyclic Chemistry Research
A fundamental building block for constructing novel heterocyclic systems. Researchers employ this compound in the exploration of new chemical entities with potential applications.
Pharmaceutical Intermediate Development
Serves as a precursor in the multi-step synthesis of potential pharmaceutical agents. Its structural motif is present in various biologically active compounds.
| Molecular weight | 175.19 |
|---|---|
| Empirical formula | C9H9N3O |
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one used for?
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5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one is primarily used as a building block and intermediate in organic chemical synthesis, particularly in the development of heterocyclic compounds and potential pharmaceutical agents.
What is the CAS number and molecular formula for 5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one?
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The CAS number is 103755-57-3, and the molecular formula is C9H9N3O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound as a research-grade chemical. The specific assay or purity is available on the Certificate of Analysis provided with each batch. Tech Serve Solutions does not represent this product as USP, BP, or EP grade.
How should 5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one be handled safely?
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Specific safety information and handling precautions are detailed in the Safety Data Sheet (SDS) for this compound, which should be consulted prior to use. General laboratory precautions for handling fine chemicals should be followed.
Is this chemical controlled or scheduled?
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Based on the provided data, there is no indication that 5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one is a controlled or scheduled substance.
How is this chemical packed, shipped, and exported?
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Tech Serve Solutions adheres to strict international shipping regulations for the packing, handling, and export of chemicals, ensuring safe and compliant delivery worldwide.
How can I request a sample or a quote?
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To request a sample or a quote for 5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one, please use the 'Contact Us' form on the Tech Serve Solutions website or contact our sales department directly.
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