3-(4-Azidophenyl)propionic acid
3-(4-Azidophenyl)propionic acid (CAS 103489-31-2, C9H9N3O2) is a versatile organic compound featuring both a carboxylic acid and an azide functional group. Its molecular weight is 191.19 g/mol. This chemical serves as a valuable building block in organic synthesis and chemical biology, particularly for conjugation and derivatisation reactions. It is suitable for research and development purposes.

Organic Synthesis
Utilised as a precursor or reagent in the synthesis of complex organic molecules. The azide group allows for click chemistry reactions, while the carboxylic acid provides a handle for further functionalization or amide formation.
Chemical Biology
Employed in bioconjugation strategies to label biomolecules. The azide moiety can react with alkynes via copper-catalyzed or strain-promoted cycloadditions for tagging proteins, nucleic acids, or other biological entities.
Materials Science
Can be incorporated into polymers or surfaces to introduce azido functionalities, enabling subsequent modification or cross-linking reactions for material functionalisation.
| Molecular weight | 191.19 |
|---|---|
| Empirical formula | C9H9N3O2 |
| Assay | ≥97.0% (T) |
| Storage temperature | 2-8°C |


Hazard statements
- H228Flammable solid
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 1325 4.1 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | E |
| Risk statements (R) | 2-11-36/37/38 |
| Safety statements (S) | 26-35 |
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 3-(4-Azidophenyl)propionic acid used for?
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3-(4-Azidophenyl)propionic acid is primarily used as a building block in organic synthesis and chemical biology, particularly for applications in bioconjugation and the development of functionalised materials. Its azide and carboxylic acid groups allow for diverse chemical transformations.
What is the CAS number and chemical formula for 3-(4-Azidophenyl)propionic acid?
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The CAS number is 103489-31-2, and the chemical formula is C9H9N3O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-(4-Azidophenyl)propionic acid with an assay of ≥97.0% (T). This product is typically considered for research or technical applications and is not represented as USP, BP, EP, or pharmaceutical grade.
How should 3-(4-Azidophenyl)propionic acid be handled safely?
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3-(4-Azidophenyl)propionic acid is classified as Danger with hazards including flammable solid (H228), skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). It must be handled with appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection. Store in a cool, well-ventilated area away from heat and ignition sources.
Is 3-(4-Azidophenyl)propionic acid a controlled substance?
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The provided data does not indicate that 3-(4-Azidophenyl)propionic acid is a controlled substance.
How is 3-(4-Azidophenyl)propionic acid packed and exported?
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Tech Serve Solutions, as a specialist global supplier and exporter, packs and ships fine chemicals like 3-(4-Azidophenyl)propionic acid in compliance with all relevant regulations for safe international transport. Specific packaging details are available upon request.
How can I request a quote or sample for 3-(4-Azidophenyl)propionic acid?
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To request a quote or a sample of 3-(4-Azidophenyl)propionic acid, please contact the Tech Serve Solutions sales team through our website or by phone.
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