1-Methyl-1H-pyrazole-4-carboxaldehyde
1-Methyl-1H-pyrazole-4-carboxaldehyde (CAS: 25016-11-9, C5H6N2O) is a heterocyclic aldehyde with a molecular weight of 110.11 g/mol. This compound serves as a valuable building block in organic synthesis, particularly for constructing more complex molecules. Its structure, featuring a pyrazole ring with an aldehyde functional group, makes it a versatile intermediate for research and development in various chemical sectors.

Organic Synthesis Intermediate
This aldehyde is a key intermediate for the synthesis of diverse organic compounds. It is frequently employed in the construction of heterocyclic systems and complex molecules for pharmaceutical and agrochemical research.
Pharmaceutical Research
As a functionalized pyrazole derivative, it is utilized in the development of novel drug candidates. Its scaffold can be incorporated into molecules designed to target various biological pathways.
Materials Science
The unique structural features of 1-Methyl-1H-pyrazole-4-carboxaldehyde may lend themselves to applications in the synthesis of advanced materials or functional dyes.
| Molecular weight | 110.11 |
|---|---|
| Empirical formula | C5H6N2O |
| Assay | 96% |
| Melting point | 29-34 °C |


Hazard statements
- H315Causes skin irritation
- H317May cause an allergic skin reaction
- H318Causes serious eye damage
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Flash point | >110 °C / >230 °F |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 37/38-41-43 |
| Safety statements (S) | 26-36/37/39 |
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 1-Methyl-1H-pyrazole-4-carboxaldehyde used for?
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1-Methyl-1H-pyrazole-4-carboxaldehyde is primarily used as a versatile building block and intermediate in organic synthesis, particularly in pharmaceutical and agrochemical research for creating complex heterocyclic compounds.
What is the CAS number and formula for 1-Methyl-1H-pyrazole-4-carboxaldehyde?
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The CAS number for 1-Methyl-1H-pyrazole-4-carboxaldehyde is 25016-11-9, and its molecular formula is C5H6N2O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Methyl-1H-pyrazole-4-carboxaldehyde with an assay of 96%. This product is intended for research and chemical synthesis purposes and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 1-Methyl-1H-pyrazole-4-carboxaldehyde be handled safely?
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Handling should be done with appropriate personal protective equipment, including a dust mask (type N95 US), eyeshields, face shields, and gloves. Ensure adequate ventilation and avoid breathing dust. The compound is classified as dangerous, causing skin irritation, serious eye damage, skin sensitisation, and respiratory irritation (H315, H318, H317, H335).
Is 1-Methyl-1H-pyrazole-4-carboxaldehyde available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 1-Methyl-1H-pyrazole-4-carboxaldehyde.
How can I request a sample or quote for 1-Methyl-1H-pyrazole-4-carboxaldehyde?
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Please contact our sales team through the website or direct inquiry channels to request a sample or a quotation for 1-Methyl-1H-pyrazole-4-carboxaldehyde.
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