3-Phenyl-1H-pyrazole-5-carboxylic acid
3-Phenyl-1H-pyrazole-5-carboxylic acid (CAS: 1134-49-2), with molecular formula C10H8N2O2 and a molecular weight of 188.18 g/mol, is a valuable heterocyclic building block. This pyrazole derivative serves as a key intermediate in the synthesis of diverse organic compounds. Its structural features make it useful in chemical research, particularly within cell biology and the development of bioactive molecules.

Chemical Synthesis Intermediate
Utilised as a building block in organic synthesis for the construction of more complex molecular architectures. Its pyrazole core and carboxylic acid functional group offer versatile reaction sites.
Research and Development
Employed in academic and industrial research settings for exploring novel chemical entities. It is particularly relevant in medicinal chemistry and the study of biologically active compounds.
Bioactive Molecule Development
Serves as a precursor or fragment in the design and synthesis of potential new pharmaceuticals and agrochemicals.
| Molecular weight | 188.18 |
|---|---|
| Empirical formula | C10H8N2O2 |
| Assay | 97% |
| Melting point | 238-242 °C (dec.)(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-36 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Gene Information | rat ... Chrnb2(54239) |
|---|
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-Phenyl-1H-pyrazole-5-carboxylic acid used for?
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3-Phenyl-1H-pyrazole-5-carboxylic acid is primarily used as a chemical synthesis intermediate, particularly in the development of bioactive small molecules and as a building block in organic chemistry research.
What is the CAS number and chemical formula for 3-Phenyl-1H-pyrazole-5-carboxylic acid?
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The CAS number is 1134-49-2, and the chemical formula is C10H8N2O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Phenyl-1H-pyrazole-5-carboxylic acid with an assay of 97%. We do not represent this product as meeting USP, BP, or EP pharmacopoeial standards.
How should 3-Phenyl-1H-pyrazole-5-carboxylic acid be handled safely?
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This compound is a skin, eye, and respiratory irritant (H315, H319, H335). When handling, use a dust mask (N95 type), safety goggles, and gloves. Ensure adequate ventilation and avoid breathing dust.
Is 3-Phenyl-1H-pyrazole-5-carboxylic acid suitable for export?
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Yes, Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals, including 3-Phenyl-1H-pyrazole-5-carboxylic acid.
How can I request a sample or quote?
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To request a sample or a quotation for 3-Phenyl-1H-pyrazole-5-carboxylic acid, please contact our sales department through the website or by phone.
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