4-Methyl-2-pyrazolin-5-one
4-Methyl-2-pyrazolin-5-one (CAS: 13315-23-6), with the molecular formula C4H6N2O and a molecular weight of 98.10 g/mol, is a heterocyclic organic compound. It serves as a valuable building block in chemical synthesis, particularly within the realm of pyrazole derivatives. Its utility is found in the development of more complex molecules for various research and industrial applications. Supplied by TSS, this compound is tested for quality assurance.

Chemical Synthesis Intermediate
4-Methyl-2-pyrazolin-5-one is widely employed as an intermediate in organic synthesis. Its reactive nature allows for diverse derivatization, facilitating the construction of complex heterocyclic structures.
Pyrazole Derivative Development
As a pyrazole derivative itself, this compound is a key starting material for synthesising a range of other pyrazole-based molecules, which are of interest in medicinal chemistry and materials science.
Research and Development
This chemical is utilized in research laboratories for exploring new synthetic pathways and developing novel compounds with potential pharmaceutical or industrial applications.
| Molecular weight | 98.10 |
|---|---|
| Empirical formula | C4H6N2O |
| Assay | 98% |
| Melting point | 230-232 °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
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
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 4-Methyl-2-pyrazolin-5-one used for?
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4-Methyl-2-pyrazolin-5-one is primarily used as a building block in chemical synthesis, particularly for developing pyrazole derivatives and other complex heterocyclic molecules in research and industrial settings.
What are the CAS number and formula for 4-Methyl-2-pyrazolin-5-one?
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The CAS number for 4-Methyl-2-pyrazolin-5-one is 13315-23-6, and its molecular formula is C4H6N2O.
What grade and purity does Tech Serve Solutions supply for 4-Methyl-2-pyrazolin-5-one?
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Tech Serve Solutions supplies 4-Methyl-2-pyrazolin-5-one with an assay of 98%. We do not represent this product as USP, BP, or EP grade.
What are the safety considerations when handling 4-Methyl-2-pyrazolin-5-one?
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4-Methyl-2-pyrazolin-5-one is classified with GHS07 symbol and a 'Warning' signal word. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, ensure good ventilation, and avoid inhalation, ingestion, and contact with skin and eyes. Refer to the Safety Data Sheet for full details.
How is 4-Methyl-2-pyrazolin-5-one packed and shipped?
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Tech Serve Solutions exports chemicals globally, ensuring appropriate packaging for safe transport and compliance with international shipping regulations. Specific packaging details are available upon request.
How can I request a sample or quote for 4-Methyl-2-pyrazolin-5-one?
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To request a sample or a quotation for 4-Methyl-2-pyrazolin-5-one, please contact our sales team through the website or by phone. Provide your contact details and the quantity required.
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