3-Methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde
3-Methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde (CAS: 21487-48-9), with the molecular formula C11H10N2O and a molecular weight of 186.21 g/mol, is a versatile organic compound. It functions as a key building block and intermediate in organic synthesis, particularly within the pharmaceutical and chemical industries. Its aldehyde functionality allows for diverse chemical transformations, making it valuable for constructing more complex molecular architectures.

Pharmaceutical Intermediate
This compound serves as a crucial intermediate in the synthesis of various pharmaceutical agents. Its structure can be incorporated into novel drug candidates undergoing research and development.
Organic Synthesis Building Block
As a functionalised pyrazole derivative, it is widely used in academic and industrial research for constructing complex heterocyclic compounds and organic molecules.
Chemical Research Reagent
Its reactive aldehyde group and pyrazole core make it a useful reagent for exploring new synthetic pathways and developing novel chemical entities.
| Molecular weight | 186.21 |
|---|---|
| Empirical formula | C11H10N2O |
| Assay | 97% |
| Melting point | 57-61 °C |
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 3-Methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde used for?
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3-Methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde (CAS: 21487-48-9) is primarily used as an intermediate and building block in organic synthesis, particularly for pharmaceutical research and the development of complex heterocyclic compounds.
What is the CAS number and formula for this product?
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The CAS number is 21487-48-9 and the empirical formula is C11H10N2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde with a minimum assay of 97%. This product is suitable for research and technical applications. We do not represent it as USP, BP, EP, or other pharmacopoeia grades unless explicitly stated.
What are the safety and handling considerations?
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According to safety data, this compound is classified under WGK Germany 2, indicating it is hazardous to water. Appropriate personal protective equipment should be used, and handling should occur in a well-ventilated area. Please consult the Safety Data Sheet for detailed hazard information.
Is this product available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals. We can arrange for the packing and shipment of 3-Methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde worldwide.
How can I request a quote or sample?
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To request a quote or sample of 3-Methyl-1-phenyl-1H-pyrazole-4-carboxaldehyde, please use the 'Request Quote' or 'Request Sample' buttons on our product page or contact our sales team directly.
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