3-Formylbenzoic acid
3-Formylbenzoic acid (CAS: 619-21-6, Formula: HO2CC6H4CHO) is a versatile organic compound with a molecular weight of 150.13 g/mol. It functions as a key building block in organic synthesis, particularly in the creation of complex molecules and derivatives. Its applications span various research and development fields, enabling the synthesis of novel chemical entities. This compound is supplied by Tech Serve Solutions with an assay of 97%.
- IUPAC
- 3-Carboxybenzaldehyde,Isophthalaldehydic acid
- Synonyms
- 3-CarboxybenzaldehydeIsophthalaldehydic acid

Synthesis of Bicyclic Azetidinones
3-Formylbenzoic acid has been utilised in Ugi 4-centre 3-component reactions to synthesise bicyclic cis-2-azetidinone derivatives, showcasing its utility in constructing complex heterocyclic systems.
Porphyrin Derivative Synthesis
This compound served as a precursor in the synthesis of porphyrins functionalised with a steroidal superstructure, highlighting its role in creating advanced macrocyclic compounds with tailored properties.
Intermediate for Complex Organic Molecules
3-Formylbenzoic acid is employed in the synthesis of elaborate organic molecules, such as specific triazoloquinoxalinylamino methylbenzoic acid derivatives, demonstrating its value in multi-step synthetic pathways.
| Molecular weight | 150.13 |
|---|---|
| Linear formula | HO2CC6H4CHO |
| Assay | 97% |
| Solubility | methanol: soluble100 mg/mL, clear to slightly hazy, colorless to very faintly brown(lit.) |
| Application | 3-Formylbenzoic acid was used in the synthesis of:• bicyclic cis-2-azetidinone derivatives via Ugi 4-centre 3-component reaction1• porphyrin capped with a steroidal superstructure bearing convergent hydroxy groups2• 3-[(4-amino-1,2-dihydro-1-oxo-2-phenyl-1,2,4-triazolo[4,3-a]quinoxalin-6-yl)amino]methylbenzoic acid3 |
| Melting point | 173-175 °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 |
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-Formylbenzoic acid used for?
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3-Formylbenzoic acid is primarily used as a building block in organic synthesis for the creation of complex molecules, including bicyclic azetidinones, porphyrins, and other intricate organic structures.
What is the CAS number and chemical formula for 3-Formylbenzoic acid?
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The CAS number for 3-Formylbenzoic acid is 619-21-6 and its linear chemical formula is HO2CC6H4CHO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Formylbenzoic acid with a purity of 97%. We do not represent this product as USP, BP, or EP grade.
How should 3-Formylbenzoic acid be handled safely?
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3-Formylbenzoic acid is classified as a warning substance. It may cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Appropriate personal protective equipment, including a dust mask (N95), eyeshields, and gloves, should be used. Work in a well-ventilated area or fume hood.
Is 3-Formylbenzoic acid available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 3-Formylbenzoic acid.
How can I request a sample or quote for 3-Formylbenzoic acid?
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Please contact our sales team via the website or email to request a sample or a quotation for 3-Formylbenzoic acid.
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