1-(4-Aminophenyl)-2-pyrrolidinone
1-(4-Aminophenyl)-2-pyrrolidinone (CAS 13691-22-0; C10H12N2O; molar mass 176.22 g/mol) is a crystalline organic building block combining a 2-pyrrolidinone (gamma-lactam) ring with a para-aminophenyl group. The free aromatic amine and the cyclic amide make it a versatile bifunctional intermediate for chemical synthesis, particularly in pharmaceutical research and the preparation of heterocyclic and pyrrolidine-based compounds. Tech Serve Solutions supplies it as a research-grade fine chemical to laboratories and manufacturers worldwide.
- Synonyms
- 1-(4-Aminophenyl)-2-pyrrolidinone1-(4-aminophenyl)pyrrolidin-2-one1-(4-Aminophenyl)pyrrolidin-2-one4-(2-oxopyrrolidin-1-yl)aniline1-(p-aminophenyl)-2-pyrrolidinoneCAS 13691-22-0

Pharmaceutical and medicinal-chemistry intermediate
Used as a building block in the synthesis of active pharmaceutical ingredients and drug candidates, where the aminophenyl-pyrrolidinone scaffold serves as a starting point for further functionalisation.
Heterocyclic building block
Serves as a pyrrolidinone (gamma-lactam) building block in organic synthesis, contributing a saturated five-membered nitrogen heterocycle to more complex target molecules.
Aromatic amine for derivatisation
The free para-amino group provides a reactive handle for amide coupling, diazotisation, reductive amination, and condensation reactions, enabling onward conversion to anilides, azo compounds and related derivatives.
Research and laboratory reagent
Employed in discovery chemistry and method-development work as a defined small-molecule reagent for structure-activity studies and route-scouting.
| Molecular weight | 176.22 |
|---|---|
| Empirical formula | C10H12N2O |
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-(4-Aminophenyl)-2-pyrrolidinone used for?
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It is used mainly as a synthetic building block and intermediate in chemical and pharmaceutical research. The combination of a reactive aromatic amine and a 2-pyrrolidinone ring makes it useful for preparing heterocyclic compounds, anilides and other pyrrolidine-based derivatives.
What is the CAS number and molecular formula of 1-(4-Aminophenyl)-2-pyrrolidinone?
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The CAS number is 13691-22-0 and the molecular formula is C10H12N2O, with a molecular weight of 176.22 g/mol. It is also described as 1-(4-aminophenyl)pyrrolidin-2-one.
What grade and purity does Tech Serve Solutions supply?
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We supply 1-(4-Aminophenyl)-2-pyrrolidinone as a research/technical-grade fine chemical suitable for synthesis and laboratory use. We do not represent it as a USP, BP or EP pharmacopoeial grade. A current specification and certificate of analysis are provided with each batch on request.
How should 1-(4-Aminophenyl)-2-pyrrolidinone be handled and stored?
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Handle it as a research chemical using good laboratory practice: work in a well-ventilated area or fume hood, wear suitable gloves, eye protection and a lab coat, and avoid generating dust and contact with skin and eyes. Store in a tightly closed container in a cool, dry, well-ventilated place away from incompatible materials. Refer to the current Safety Data Sheet supplied with the product before use.
How is 1-(4-Aminophenyl)-2-pyrrolidinone packed, shipped and exported?
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It is packed in appropriately labelled, sealed containers sized to the order, from gram quantities for laboratories to larger packs for manufacturing. Tech Serve Solutions exports worldwide with full documentation, including the Safety Data Sheet and certificate of analysis, and arranges packaging and transport in line with applicable regulations.
How do I request a sample or a quote?
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Contact Tech Serve Solutions with the product name, CAS number 13691-22-0 and your required quantity and destination. We will respond with availability, lead time, specification details and a formal quotation.
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