3-Chloro-4-hydroxy-5-methoxybenzaldehyde
3-Chloro-4-hydroxy-5-methoxybenzaldehyde (CAS: 19463-48-0; Formula: CH3OC6H2Cl(OH)CHO; Molar Mass: 186.59 g/mol) is a fine chemical intermediate supplied by Tech Serve Solutions. This aromatic aldehyde is characterised by its specific substitution pattern, featuring chlorine, hydroxyl, and methoxy groups alongside the aldehyde functionality. It is primarily utilised as a building block in organic synthesis and chemical research, including specific oxidation reactions.

Organic Synthesis Building Block
Utilised as a versatile intermediate in the construction of more complex organic molecules. Its distinct functional groups allow for various synthetic transformations.
Chemical Research
Employed in laboratory settings for the investigation of chemical reactions and the development of novel compounds. Specific applications include enzymatic oxidation studies.
Oxidation Reactions
Has been documented for use in oxidation reactions, such as its conversion to hydroxymethine quinone mediated by laccase enzymes.
| Molecular weight | 186.59 |
|---|---|
| Linear formula | CH3OC6H2Cl(OH)CHO |
| Assay | 96% |
| Application | The product has been used for an oxidation reaction by laccase to form hydroxymethine quinone.1 |
| Melting point | 165-169 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H413May cause long-lasting harmful effects to aquatic life
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| 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-Chloro-4-hydroxy-5-methoxybenzaldehyde used for?
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3-Chloro-4-hydroxy-5-methoxybenzaldehyde is primarily used as a building block in organic synthesis and for chemical research purposes, including specific oxidation reactions.
What are the CAS number and molecular formula for 3-Chloro-4-hydroxy-5-methoxybenzaldehyde?
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The CAS number is 19463-48-0, and the molecular formula is CH3OC6H2Cl(OH)CHO.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Chloro-4-hydroxy-5-methoxybenzaldehyde with an assay of 96%. This product is intended for research and chemical synthesis and is not supplied as USP, BP, EP, or any other pharmacopoeial grade.
How should 3-Chloro-4-hydroxy-5-methoxybenzaldehyde be handled safely?
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Handle with appropriate personal protective equipment, including a dust mask type N95 (US), eyeshields, and gloves. Ensure good ventilation. It is a skin, eye, and respiratory irritant and may cause long-term aquatic hazard.
Is this product available for export?
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Yes, Tech Serve Solutions is a global supplier and exporter of fine chemicals, including 3-Chloro-4-hydroxy-5-methoxybenzaldehyde.
How can I request a sample or quote?
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Please contact our sales department via the website to request a sample or a quotation for 3-Chloro-4-hydroxy-5-methoxybenzaldehyde.
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