3,4-Dihydroxy-5-methoxybenzaldehyde
3,4-Dihydroxy-5-methoxybenzaldehyde (CAS: 3934-87-0), with the molecular formula C8H8O4 and a molecular weight of 168.15 g/mol, is a valuable organic building block. This aromatic aldehyde features hydroxyl and methoxy substituents, making it a versatile intermediate in various chemical synthesis pathways. It is frequently employed in the development of more complex organic molecules and serves as a precursor in research and development laboratories. TSS provides this compound with an assay of 96%.
- Synonyms
- CH3OC6H2(OH)2CHO

Organic Synthesis Intermediate
Utilised as a key building block in the synthesis of diverse organic compounds. Its functional groups allow for a range of chemical transformations in the preparation of more complex molecules.
Research and Development
A useful reagent in academic and industrial research settings for exploring novel chemical reactions and developing new materials or pharmaceutical candidates.
Precursor for Specialty Chemicals
Serves as a precursor for the creation of specialty chemicals, including those with potential applications in materials science or pharmaceuticals, owing to its specific substitution pattern.
| Molecular weight | 168.15 |
|---|---|
| Linear formula | CH3OC6H2(OH)2CHO |
| Assay | 96% |
| Melting point | 131-134 °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 3,4-Dihydroxy-5-methoxybenzaldehyde used for?
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3,4-Dihydroxy-5-methoxybenzaldehyde is primarily used as an intermediate in organic synthesis and in research and development for creating more complex organic molecules and specialty chemicals.
What are the CAS number and molecular formula for 3,4-Dihydroxy-5-methoxybenzaldehyde?
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The CAS number for 3,4-Dihydroxy-5-methoxybenzaldehyde is 3934-87-0, and its linear formula is CH3OC6H2(OH)2CHO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3,4-Dihydroxy-5-methoxybenzaldehyde with an assay of 96%. TSS does not represent this product as USP, BP, EP, or any pharmacopoeia grade.
What are the main safety hazards associated with 3,4-Dihydroxy-5-methoxybenzaldehyde?
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This compound is classified with the GHS symbol GHS07 and signal word Warning. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves.
How is 3,4-Dihydroxy-5-methoxybenzaldehyde packed, shipped, and exported?
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Tech Serve Solutions ensures appropriate packaging for safe transport and export of chemicals, adhering to international shipping regulations. Please contact us for specific details regarding your region.
How can I request a sample or a quote for 3,4-Dihydroxy-5-methoxybenzaldehyde?
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To request a sample or a quote, please contact our sales team via the website or direct email, specifying the product name and CAS number (3934-87-0).
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