3-Chloro-4-methoxybenzoic acid
3-Chloro-4-methoxybenzoic acid (CAS: 37908-96-6) is a carboxylic acid derivative with the molecular formula H3COC6H3(Cl)CO2H and a molecular weight of 186.59 g/mol. This compound functions as a valuable building block in organic synthesis. It is primarily utilised in the preparation of more complex molecules within the pharmaceutical and chemical research sectors, serving as a key intermediate in various synthetic pathways.
- IUPAC
- 3-Chloro-p-anisic acid

Organic Synthesis Intermediate
3-Chloro-4-methoxybenzoic acid serves as a foundational component in multi-step organic syntheses. Its functional groups allow for various chemical transformations, enabling the construction of diverse molecular architectures.
Pharmaceutical Research
This compound is employed in the development of novel pharmaceutical agents. Its structure can be incorporated into potential drug candidates, contributing to the exploration of new therapeutic compounds.
Material Science
It may find application in the synthesis of specialised organic materials. The specific arrangement of chloro and methoxy groups can influence the properties of resulting polymers or functional materials.
| Molecular weight | 186.59 |
|---|---|
| Linear formula | H3COC6H3(Cl)CO2H |
| Assay | 97% |
| Melting point | 216-218 °C(lit.) |


Hazard statements
- H301Toxic if swallowed
- H319Causes serious eye irritation
- H400Very toxic to aquatic life
Precautionary statements
- P273Avoid release to the environment
- P301IF SWALLOWED
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3077 9 / PGIII |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 22-50 |
| Safety statements (S) | 60-61 |
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-methoxybenzoic acid used for?
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3-Chloro-4-methoxybenzoic acid is used as a building block and intermediate in organic synthesis, particularly in pharmaceutical research and the development of specialised organic materials.
What are the CAS number and chemical formula for 3-Chloro-4-methoxybenzoic acid?
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The CAS number is 37908-96-6, and its chemical formula is H3COC6H3(Cl)CO2H.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 3-Chloro-4-methoxybenzoic acid with a minimum assay of 97%. We do not represent this product as meeting USP, BP, EP, or other pharmacopoeial standards.
What are the primary safety hazards associated with this compound?
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3-Chloro-4-methoxybenzoic acid is classified as acutely toxic if swallowed (H301), causes serious eye irritation (H319), and is very toxic to aquatic life (H400). Handle with appropriate personal protective equipment including a dust mask (type N95 US), eyeshields, faceshields, and gloves. Ensure adequate ventilation and avoid release into the environment.
How is 3-Chloro-4-methoxybenzoic acid packed, shipped, and exported?
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This chemical is typically packed according to international shipping regulations for hazardous materials. Tech Serve Solutions is experienced in exporting fine chemicals globally.
How can I request a sample or quote for 3-Chloro-4-methoxybenzoic acid?
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To request a sample or a quote, please contact our sales department through the website or by calling our customer service number. Please specify the quantity and your delivery location.
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