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≥99.0% by HPLC; reference specification
Royalchem
51-36-5
| Product Name | 3,5-Dichlorobenzoic Acid CAS: 51-36-5 EC: 200-092-4 Synonym: Benzoic acid, 3,5-dichloro- |
| Formula / MW | C7H4Cl2O2 191.01 g/mol |
| Structure |  |
| Product Type | Chlorinated aromatic carboxylic acid building block for organic synthesis and pharmaceutical route R&D. |
| Specification |
Reference specification based on the supplied COA specification column. The agreed specification and corresponding batch COA govern supply. |
| Applications | Building block for organic synthesis and R&D. Published patents describe its use as a starting material in tafamidis synthesis; route suitability and quality requirements are project-specific. |
| Packing & Storage | Packaging, order quantity, supply volume and lead time are confirmed at enquiry. Keep tightly closed in a cool, dry, well-ventilated place, away from strong oxidizing agents. Follow the supplied SDS for handling. |
| What is 3,5-dichlorobenzoic acid? | 3,5-Dichlorobenzoic Acid is a chlorinated aromatic carboxylic acid, CAS 51-36-5, EC 200-092-4. Its molecular formula is C7H4Cl2O2 and molecular weight is 191.01 g/mol. The chlorine atoms occupy positions 3 and 5 relative to the carboxyl group. |
| What purity and test method are specified? | The reference specification is purity ≥99.0% by HPLC. Compare both the stated purity and analytical method when evaluating material. Values obtained using different methods are not automatically equivalent; the corresponding batch COA reports the measured result. |
| Is it a tafamidis synthesis intermediate? | Published patent CN114057662A identifies 3,5-dichlorobenzoic acid as a starting material in tafamidis synthesis. This is a documented building-block application. This product and tafamidis API are different compounds; suitability for a particular route and quality system is confirmed for the project. |
| Which other quality parameters matter? | The listed reference limits are moisture ≤0.5% and single impurity ≤0.5%, with a white powder appearance. Specify any individual positional isomers, residual solvents or chromatogram requirements at enquiry so that the test scope and limits can be agreed. |
| How do I distinguish positional isomers? | Confirm the full product name, structure and CAS 51-36-5. Dichlorobenzoic acid positional isomers can share a molecular formula while differing in substitution pattern. The formula alone is insufficient to identify the required isomer. |
| What documents and storage information should be checked? | Review the relevant product COA and SDS, including the specification, batch and document version. Store tightly closed in a cool, dry, well-ventilated place, away from strong oxidizing agents. Control dust and follow the supplied SDS for handling and protective measures. |
| What is needed for a quotation? | Please state CAS 51-36-5, application or target route, required HPLC purity and impurity limits, quantity, packaging, destination and delivery schedule. Order quantity, supply volume and lead time are subject to confirmation at enquiry. |
Identity and application references: NIH PubChem CID 5811; CN114057662A; WO2021001858A1.
