1-Methyl-3-pyrrolidinone
1-Methyl-3-pyrrolidinone (CAS: 68165-06-0) is a chemical compound with the formula C5H9NO and a molecular weight of 99.13 g/mol. This heterocyclic organic compound serves as a valuable building block in chemical synthesis. Its properties make it suitable for various applications within organic chemistry research and development, particularly in the creation of more complex molecules.

Organic Synthesis Intermediate
1-Methyl-3-pyrrolidinone functions as a versatile intermediate in the synthesis of diverse organic compounds. It is particularly useful in the construction of heterocyclic structures and derivatives.
Research and Development
This compound is employed in laboratory settings for research and development activities. Its structural features allow for exploration in medicinal chemistry and materials science.
Building Block for Complex Molecules
As a C4 to C8 building block, 1-Methyl-3-pyrrolidinone contributes to the assembly of larger, more complex molecular architectures in multi-step synthetic pathways.
| Molecular weight | 99.13 |
|---|---|
| Empirical formula | C5H9NO |
| Assay | 97% |
| Density | 0.984 g/mL at 25 °C |
| Refractive index | n20/D 1.451 |
| Storage temperature | −20°C |



Hazard statements
- H226Flammable liquid and vapour
- 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
| Flash point | 42 °C / 107.6 °F |
|---|---|
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 10-37/38-41-43 |
| 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-3-pyrrolidinone used for?
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1-Methyl-3-pyrrolidinone is primarily used as a building block in chemical synthesis and for research and development purposes in organic chemistry.
What is the CAS number and formula for 1-Methyl-3-pyrrolidinone?
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The CAS number for 1-Methyl-3-pyrrolidinone is 68165-06-0, and its empirical formula is C5H9NO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Methyl-3-pyrrolidinone with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should 1-Methyl-3-pyrrolidinone be handled safely?
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1-Methyl-3-pyrrolidinone is flammable and can cause skin irritation, serious eye damage, and respiratory irritation. Handle with appropriate personal protective equipment (gloves, eye protection, respiratory protection) in a well-ventilated area, keeping away from heat and open flames.
Can Tech Serve Solutions export 1-Methyl-3-pyrrolidinone?
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Yes, Tech Serve Solutions is a global supplier and exporter of chemicals, including 1-Methyl-3-pyrrolidinone.
How can I request a sample or quote for 1-Methyl-3-pyrrolidinone?
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Please contact our sales team or use the website enquiry form to request a sample or a quote for 1-Methyl-3-pyrrolidinone.
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