1-Phenyl-2-oxo-3-pyrrolidinecarboxylic acid
1-Phenyl-2-oxo-3-pyrrolidinecarboxylic acid (CAS: 56137-52-1, C11H11NO3) is a heterocyclic building block with a molecular weight of 205.21 g/mol. This compound serves as a valuable intermediate in organic synthesis, particularly within the pharmaceutical and chemical research sectors. Its structure, featuring a pyrrolidine ring substituted with a phenyl and a keto group, makes it suitable for constructing more complex molecular architectures.

Organic Synthesis Intermediate
Utilised as a key building block in the synthesis of complex organic molecules. Its reactive functional groups allow for diverse chemical transformations, facilitating the development of novel compounds.
Pharmaceutical Research
Serves as a precursor or intermediate in the discovery and development of new pharmaceutical agents. The pyrrolidine core is a common motif in many biologically active molecules.
Chemical Reagent
Employed in various chemical reactions and methodologies for the creation of new chemical entities. Its specific structure provides a unique starting point for various synthetic routes.
| Molecular weight | 205.21 |
|---|---|
| Empirical formula | C11H11NO3 |
| Assay | 95% |
| Melting point | 142-146 °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 1-Phenyl-2-oxo-3-pyrrolidinecarboxylic acid used for?
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1-Phenyl-2-oxo-3-pyrrolidinecarboxylic acid is primarily used as a building block and intermediate in organic synthesis, particularly for pharmaceutical research and the development of novel chemical entities.
What are the CAS number and molecular formula?
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The CAS number is 56137-52-1 and the molecular formula is C11H11NO3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this compound with an assay of 95%. We do not represent it as USP, BP, EP, or any other pharmacopoeia grade.
How should 1-Phenyl-2-oxo-3-pyrrolidinecarboxylic acid be handled?
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Handle with appropriate personal protective equipment, including a dust mask type N95, eyeshields, and gloves. Avoid breathing dust and ensure adequate ventilation as it may cause skin, eye, and respiratory irritation (H315-H319-H335).
Is this product available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals and laboratory reagents.
How can I request a sample or quote?
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Please use the contact form on our website or contact our sales department directly to request a sample or a quotation.
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