2,4-Dihydroxybenzaldehyde
2,4-Dihydroxybenzaldehyde (CAS: 95-01-2), also known as β-Resorcylaldehyde, is an aromatic aldehyde with the molecular formula (HO)2C6H3CHO and a molar mass of 138.12 g/mol. This versatile compound serves as a key intermediate and building block in organic synthesis. It is frequently employed in the development of pharmaceuticals, agrochemicals, and complex organic molecules, demonstrating its importance in various chemical manufacturing processes.
- IUPAC
- β-Resorcylaldehyde
- Synonyms
- (HO)2C6H3CHOβ-Resorcylaldehyde

Organic Synthesis Intermediate
2,4-Dihydroxybenzaldehyde is a valuable building block in organic chemistry. Its reactive aldehyde and hydroxyl groups allow for diverse synthetic transformations, making it useful for constructing more complex molecules.
Pharmaceutical Development
The compound finds application in the synthesis of various pharmaceutical agents and drug intermediates. Its structural features can be incorporated into molecules targeting specific biological pathways.
Agrochemical Synthesis
It serves as a precursor in the production of certain agrochemicals. The chemical structure lends itself to the development of compounds with desired pesticidal or herbicidal properties.
Dye and Pigment Production
2,4-Dihydroxybenzaldehyde can be utilised in the synthesis of dyes and pigments, contributing to the colouration industry through its chromophoric potential.
| Molecular weight | 138.12 |
|---|---|
| Linear formula | (HO)2C6H3CHO |
| Assay | 98% |
| Grade | purum |
| Boiling point | 220-228 °C/22 mmHg(lit.) |
| Melting point | 135-137 °C(lit.) |

Hazard statements
- H302Harmful if swallowed
- 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, Faceshields, Gloves |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/37/38 |
| 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 2,4-Dihydroxybenzaldehyde used for?
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2,4-Dihydroxybenzaldehyde is primarily used as an intermediate and building block in organic synthesis, finding applications in pharmaceutical development, agrochemical production, and the synthesis of dyes and pigments.
What is the CAS number and molecular formula for 2,4-Dihydroxybenzaldehyde?
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The CAS number for 2,4-Dihydroxybenzaldehyde is 95-01-2, and its linear molecular formula is (HO)2C6H3CHO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 2,4-Dihydroxybenzaldehyde with a purity of 98% (purum grade). We do not represent this product as USP, BP, or EP grade.
How should 2,4-Dihydroxybenzaldehyde be handled?
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Handle 2,4-Dihydroxybenzaldehyde with appropriate personal protective equipment, including a dust mask (type N95 US recommended), eyeshields, face shields, and gloves. Avoid inhalation of dust and ensure adequate ventilation. It is classified as harmful if swallowed and causes skin and eye irritation.
How is 2,4-Dihydroxybenzaldehyde packed and exported?
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2,4-Dihydroxybenzaldehyde is carefully packed according to industry standards to ensure safe handling and transit. Tech Serve Solutions is experienced in exporting chemicals globally.
How can I request a quote or sample for 2,4-Dihydroxybenzaldehyde?
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To request a quote or a sample of 2,4-Dihydroxybenzaldehyde, please contact our sales team through our website or by phone.
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