5-Bromo-2,3-dimethoxybenzaldehyde
5-Bromo-2,3-dimethoxybenzaldehyde (CAS: 71295-21-1) is an organic compound with the molecular formula BrC6H2(OCH3)2CHO and a molecular weight of 245.07 g/mol. This substituted benzaldehyde serves as a valuable building block in organic synthesis. It is commonly employed in the chemical industry and research laboratories for the preparation of more complex molecules and as an intermediate in the development of novel compounds. Its utility lies in its reactive aldehyde group and the presence of a bromine atom and methoxy substituents on the aromatic ring.
- Synonyms
- BrC6H2(OCH3)2CHO

Organic Synthesis Intermediate
5-Bromo-2,3-dimethoxybenzaldehyde is frequently used as a key intermediate in multi-step organic syntheses. Its functional groups allow for a variety of chemical transformations, enabling the construction of diverse molecular architectures.
Pharmaceutical Research
This compound can serve as a starting material or intermediate in the synthesis of potential pharmaceutical agents. Its unique substitution pattern may be beneficial for developing novel drug candidates.
Fine Chemical Manufacturing
As a specialised building block, it finds application in the fine chemical sector for producing high-value compounds used in various industrial processes and research applications.
| Molecular weight | 245.07 |
|---|---|
| Linear formula | BrC6H2(OCH3)2CHO |
| Assay | 97% |
| Melting point | 81-84 °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 5-Bromo-2,3-dimethoxybenzaldehyde used for?
+
5-Bromo-2,3-dimethoxybenzaldehyde is primarily used as a building block and intermediate in organic synthesis, particularly in pharmaceutical research and fine chemical manufacturing.
What are the CAS number and molecular formula for 5-Bromo-2,3-dimethoxybenzaldehyde?
+
The CAS number is 71295-21-1, and the molecular formula is BrC6H2(OCH3)2CHO.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies 5-Bromo-2,3-dimethoxybenzaldehyde with a minimum purity of 97%. This product is typically supplied for research and laboratory use and is not represented as USP, BP, EP, or any other pharmacopoeia grade.
How should 5-Bromo-2,3-dimethoxybenzaldehyde be handled?
+
Handling requires caution. Wear a dust mask type N95 (US), eyeshields, and gloves. Avoid breathing dust. In case of contact with eyes, rinse cautiously with water for several minutes. Ensure adequate ventilation. This compound is classified as irritating to the skin, eyes, and respiratory system (H315-H319-H335).
How is 5-Bromo-2,3-dimethoxybenzaldehyde packed, shipped, and exported?
+
Tech Serve Solutions expertly packs, ships, and exports chemicals globally, adhering to all relevant regulations for safe and compliant transport.
How can I request a sample or quote for 5-Bromo-2,3-dimethoxybenzaldehyde?
+
To request a sample or quote, please contact our sales department through the website or by phone, providing your specific requirements.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis