5-Amino-3-(4-methylphenyl)pyrazole
5-Amino-3-(4-methylphenyl)pyrazole (CAS 78597-54-3) is a chemical compound with the formula C10H11N3 and a molecular weight of 173.21 g/mol. This pyrazole derivative functions as a key heterocyclic building block in chemical synthesis. It is primarily utilised in the research and development of novel organic molecules, particularly within the pharmaceutical and agrochemical sectors, owing to its versatile reactivity and structural motif.

Organic Synthesis
Serves as a crucial intermediate and building block for the synthesis of more complex organic molecules. Its pyrazole core and amino group allow for diverse functionalisation.
Pharmaceutical Research
A valuable reagent in the discovery and development of new pharmaceutical agents. It can be incorporated into candidate molecules targeting various therapeutic areas.
Agrochemical Development
Utilised in the design and synthesis of novel agrochemicals, such as pesticides and herbicides, due to its heterocyclic structure.
Material Science
Potentially employed in the development of new materials with specific electronic or optical properties, owing to its aromatic and nitrogen-containing structure.
| Molecular weight | 173.21 |
|---|---|
| Empirical formula | C10H11N3 |
| Assay | 97% |
| Melting point | 148-151 °C(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.
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-Amino-3-(4-methylphenyl)pyrazole used for?
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5-Amino-3-(4-methylphenyl)pyrazole is primarily used as a building block in organic synthesis, particularly for research and development in the pharmaceutical and agrochemical industries.
What are the CAS number and molecular formula?
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The CAS number for 5-Amino-3-(4-methylphenyl)pyrazole is 78597-54-3, and its molecular formula is C10H11N3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 5-Amino-3-(4-methylphenyl)pyrazole with an assay of 97%. This product is intended for research and chemical synthesis purposes and is not represented as USP, BP, or EP grade.
What are the primary safety considerations when handling this compound?
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This compound is classified as a Warning (GHS07) and may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (NIOSH N95), eyeshields, and gloves, should be used. Handle in a well-ventilated area.
How is 5-Amino-3-(4-methylphenyl)pyrazole typically packed and shipped?
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Products are carefully packed according to regulatory requirements for safe transportation and are exported globally by Tech Serve Solutions.
How can I request a sample or a quote?
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To request a sample or obtain a quotation, please contact our sales department through the website or direct email, providing your specific requirements.
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