Pyrrole-2-carboxylic acid
Pyrrole-2-carboxylic acid (CAS: 634-97-9, C5H5NO2) is a heterocyclic organic compound with a molecular weight of 111.10 g/mol. This chemical serves as a key building block in organic synthesis, particularly for the creation of complex molecules. Its primary applications are in the development of pharmaceuticals, including cholecystokinin antagonists and antihypertensive agents. It is also utilised in the synthesis of azepinediones.

Pharmaceutical Synthesis
Pyrrole-2-carboxylic acid is instrumental in the synthesis of various pharmaceutical agents. It has been employed in the development of cholecystokinin antagonists and benzopyran antihypertensives.
Organic Synthesis Intermediate
As a versatile heterocyclic building block, this compound is used in the construction of complex organic molecules. Its structure lends itself to further functionalisation in multi-step synthesis pathways.
Azepinedione Development
The compound finds application in the synthesis of azepinediones, a class of organic compounds with diverse potential applications in medicinal chemistry and materials science.
| Molecular weight | 111.10 |
|---|---|
| Empirical formula | C5H5NO2 |
| Assay | 99% |
| Application | Employed in the synthesis of cholecystokinin antagonists,1 benzopyran antihypertensives,2 and azepinediones.3 |
| Melting point | 204-208 °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
| 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 Pyrrole-2-carboxylic acid used for?
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Pyrrole-2-carboxylic acid is primarily used as a building block in organic synthesis, particularly for the preparation of pharmaceuticals such as cholecystokinin antagonists, benzopyran antihypertensives, and azepinediones.
What are the CAS number and formula for Pyrrole-2-carboxylic acid?
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The CAS number for Pyrrole-2-carboxylic acid is 634-97-9, and its empirical formula is C5H5NO2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Pyrrole-2-carboxylic acid with a minimum assay of 99%. This product is supplied for research and development purposes and is not intended for human or animal consumption or for in-vitro diagnostic use. It is not represented as meeting USP, BP, EP, or any other pharmacopoeial standards.
How should Pyrrole-2-carboxylic acid be handled safely?
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Pyrrole-2-carboxylic acid is classified as a warning substance. It may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). When handling, it is essential to wear appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, and gloves. Ensure adequate ventilation and avoid breathing dust. In case of eye contact, rinse cautiously with water for several minutes (P305 + P351 + P338).
Is Pyrrole-2-carboxylic acid a controlled substance?
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Based on the provided data, Pyrrole-2-carboxylic acid is not indicated as a controlled substance. However, users should always verify current local regulations.
How is Pyrrole-2-carboxylic acid packed and shipped?
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Pyrrole-2-carboxylic acid is carefully packed to ensure safe transit and compliance with international shipping regulations. Specific packaging details can be provided upon request.
How can I request a sample or quote for Pyrrole-2-carboxylic acid?
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To request a sample or a quotation for Pyrrole-2-carboxylic acid, please contact our sales team through the website or by phone, providing your specific requirements.
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