Protocatechuic acid ethyl ester
Protocatechuic acid ethyl ester (CAS: 3943-89-3) is an organic compound with the linear formula (HO)₂C₆H₃CO₂C₂H₅ and a molecular weight of 182.17 g/mol. This ester derivative of protocatechuic acid is characterised by its aromatic ring and ester functionality. It serves as a valuable building block in chemical synthesis and is relevant in research concerning cancer metabolism and the Warburg effect.
- IUPAC
- Ethyl 3,4-dihydroxybenzoate
- Synonyms
- Ethyl 3,4-dihydroxybenzoate

Chemical Synthesis
Protocatechuic acid ethyl ester functions as a versatile organic building block. Its structure allows for various chemical modifications, making it useful in the synthesis of more complex molecules.
Cancer Metabolism Research
This compound is employed in studies investigating aerobic glycolysis, also known as the Warburg effect. Its role in cancer cell metabolism pathways makes it a subject of interest in cancer research.
Aerobic Glycolysis Inhibition Studies
As an inhibitor related to aerobic glycolysis, protocatechuic acid ethyl ester is utilised in biochemical research to understand and potentially target cellular energy production mechanisms.
| Molecular weight | 182.17 |
|---|---|
| Linear formula | (HO)2C6H3CO2C2H5 |
| Assay | 97% |
| Melting point | 132-134 °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 Protocatechuic acid ethyl ester used for?
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Protocatechuic acid ethyl ester is used as a building block in chemical synthesis and in research related to cancer metabolism, particularly concerning aerobic glycolysis (the Warburg effect).
What is the CAS number and chemical formula for Protocatechuic acid ethyl ester?
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The CAS number for Protocatechuic acid ethyl ester is 3943-89-3, and its linear formula is (HO)₂C₆H₃CO₂C₂H₅.
What grade and purity does Tech Serve Solutions supply for Protocatechuic acid ethyl ester?
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Tech Serve Solutions supplies Protocatechuic acid ethyl ester with an assay of 97%. We do not represent this product as USP, BP, or EP grade.
How should Protocatechuic acid ethyl ester be handled safely?
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Protocatechuic acid ethyl ester is a Warning substance that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves, and ensure good ventilation.
Is Protocatechuic acid ethyl ester available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including Protocatechuic acid ethyl ester.
How can I request a sample or quote for Protocatechuic acid ethyl ester?
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Please contact our sales team through the website or by phone to request a sample or a quotation for Protocatechuic acid ethyl ester.
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