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2-Bromo-5-chlorobenzoic acid

CAS 21739-93-5 · Brominated Compound · 3 functional traits · cGMP compliant · Ships from USA in 2-3 days

Brominated Compound

2-Bromo-5-chlorobenzoic acid

Halogenated PharmaceuticalFine ChemicalAgrochemicalResearchChemical ManufacturingPolymer
CAS Number 21739-93-5
Category Brominated Compound · Chlorinated Compound
Origin USA
Compliance cGMP

Questions? Contact our chemistry team:

chemistry@chem-contract.com | +1 (714) 732-8549
In stock — typically ships within 2-3 business days

About 2-Bromo-5-chlorobenzoic acid

2-Bromo-5-chlorobenzoic acid (CAS Number: 21739-93-5) is a bromo-substituted intermediate prized for its reactivity in metal-catalyzed coupling. ChemContract Research supplies this moderate-complexity compound in high purity from our Huntington Beach, California facility, ensuring consistent quality and reliable domestic delivery throughout the United States.

Aryl and alkyl bromides occupy a "Goldilocks zone" in cross-coupling — more reactive than chlorides yet more stable than iodides — making them the most commonly used coupling partners in process chemistry. Chloro substituents serve a dual role in drug design — as synthetic handles for late-stage functionalization and as bioisosteres that modulate lipophilicity and binding affinity. Carboxylic acids are among the most synthetically versatile functional groups — they can be converted to amides, esters, acid chlorides, anhydrides, alcohols, and aldehydes in a single step.

Primary applications include grignard reagent preparation via magnesium insertion into c–br bond and nucleophilic aromatic substitution (snar) for ether and amine formation. This compound serves researchers and manufacturers across the pharmaceutical, fine chemical, agrochemical sectors. Whether you require 2-Bromo-5-chlorobenzoic acid for early-stage research, process development, or commercial-scale production, ChemContract Research offers flexible ordering from milligram to multi-kilogram quantities with custom synthesis options and full batch documentation including Certificates of Analysis (CoA) and Safety Data Sheets.

Functional Groups: Carboxylic acid (–COOH)Bromine (C–Br)Chlorine (C–Cl)

Brominated Compound Applications & Target Industries

How 2-Bromo-5-chlorobenzoic acid is used across pharmaceutical and fine chemical sectors

01

Grignard reagent preparation via magnesium insertion into C–Br bond

02

Nucleophilic aromatic substitution (SNAr) for ether and amine formation

03

Amide bond formation via EDC/HOBt or HATU coupling in peptide synthesis

04

Palladium-catalyzed Suzuki, Heck, and Negishi cross-coupling

05

Grignard reagent precursor for C–C bond construction

06

Salt formation with amines to improve drug crystallinity and stability

Target Industries: PharmaceuticalFine ChemicalAgrochemicalResearchChemical ManufacturingPolymer

2-Bromo-5-chlorobenzoic acid Specifications

Detailed specifications for this brominated compound, including purity, molecular weight, and analytical data are available upon request. Every batch from ChemContract Research includes:

  • Certificate of Analysis (CoA) with purity verification
  • HPLC, NMR, and/or mass spectrometry characterization data
  • Material Safety Data Sheet (MSDS/SDS)
  • Batch-specific documentation and lot traceability
  • Custom analytical testing available on request
Request Full Specifications

Quick Reference

Compound Name 2-Bromo-5-chlorobenzoic acid
Type Brominated Compound
Category Brominated Compound · Chlorinated Compound
Purity ≥95% (custom grades available)
Complexity Moderate (3 functional groups, 0 rings)
Compliance cGMP
Packaging mg to kg scale

Storage & Handling for Brominated Compounds

Handling Guidelines

Some brominated compounds may be lachrymatory or skin irritants. Handle in a fume hood with appropriate PPE. Some chlorinated compounds are volatile or irritating. Use a fume hood and appropriate PPE. Acid chlorides react vigorously with water. Acids may be corrosive or irritating. Handle with chemical-resistant gloves and eye protection. Use a fume hood for volatile acids.

Storage Conditions

Store at room temperature in a tightly sealed, light-resistant container. Some bromo compounds require refrigeration. Store at recommended temperature in a well-sealed container. Protect from moisture and strong bases. Store at room temperature in a tightly sealed container. Protect from moisture and strong bases.

Why Buy 2-Bromo-5-chlorobenzoic acid From ChemContract?

Quality Assured

Every batch of 2-Bromo-5-chlorobenzoic acid is produced under cGMP conditions with full CoA documentation, HPLC purity verification, and lot traceability.

Fast USA Shipping

Ship from our Huntington Beach, CA facility with 2-3 business day domestic delivery. No import delays, no customs fees, no tariff surprises.

Custom Synthesis

Need a specific grade, quantity, or derivative of 2-Bromo-5-chlorobenzoic acid? Our team of PhD chemists can develop custom synthesis solutions for your exact requirements.

Frequently Asked

Common questions about 2-Bromo-5-chlorobenzoic acid

What is 2-Bromo-5-chlorobenzoic acid used for? +

2-Bromo-5-chlorobenzoic acid is a bromo-substituted intermediate prized for its reactivity in metal-catalyzed coupling used primarily in the pharmaceutical and fine chemical industries. Key applications include grignard reagent preparation via magnesium insertion into c–br bond and nucleophilic aromatic substitution (snar) for ether and amine formation.

Where can I buy 2-Bromo-5-chlorobenzoic acid in the USA? +

ChemContract Research is a trusted USA-based supplier of 2-Bromo-5-chlorobenzoic acid. We offer competitive pricing, fast domestic shipping from our Huntington Beach, California facility, and full quality documentation including Certificates of Analysis (CoA). Request a quote at chemistry@chem-contract.com or call +1 (714) 732-8549.

What purity levels are available for 2-Bromo-5-chlorobenzoic acid? +

ChemContract Research supplies 2-Bromo-5-chlorobenzoic acid in multiple purity grades: ≥95% standard grade, ≥97% high-purity grade, and ≥99% ultra-high-purity grade depending on application requirements. We can also provide custom purity grades through our synthesis capabilities. Contact us for specific purity information and CoA documentation.

Can ChemContract synthesize 2-Bromo-5-chlorobenzoic acid in custom quantities? +

Yes. ChemContract Research offers custom synthesis services for 2-Bromo-5-chlorobenzoic acid from milligram to multi-kilogram scale. Our cGMP-compliant facilities and experienced chemists can accommodate custom specifications, packaging requirements, and delivery timelines. Contact our team to discuss your project.

What coupling reagents work best with 2-Bromo-5-chlorobenzoic acid? +

For amide bond formation from the carboxylic acid in 2-Bromo-5-chlorobenzoic acid, HATU/DIPEA is recommended for peptide coupling (high yield, low epimerization). EDC/HOBt is a cost-effective alternative for non-peptide amides. T3P (propylphosphonic acid anhydride) offers excellent atom economy with easy workup. For ester formation, DCC/DMAP (Steglich conditions) or Mitsunobu conditions are standard.

What coupling reactions can I run with 2-Bromo-5-chlorobenzoic acid? +

As a brominated compound, 2-Bromo-5-chlorobenzoic acid is an excellent substrate for palladium-catalyzed cross-coupling reactions including Suzuki, Heck, Negishi, Sonogashira, and Buchwald–Hartwig amination. It can also be used for Grignard reagent preparation, metal–halogen exchange with organolithium reagents, and nucleophilic substitution reactions.

How should I store 2-Bromo-5-chlorobenzoic acid? +

Store at room temperature in a tightly sealed, light-resistant container. Some bromo compounds require refrigeration. Store at recommended temperature in a well-sealed container. Protect from moisture and strong bases. Store at room temperature in a tightly sealed container. Protect from moisture and strong bases. Always consult the compound-specific Safety Data Sheet (SDS) provided with your order for detailed storage requirements. ChemContract Research includes handling and storage documentation with every shipment.

What is the CAS number of 2-Bromo-5-chlorobenzoic acid? +

The CAS Registry Number for 2-Bromo-5-chlorobenzoic acid is 21739-93-5. This unique identifier is used worldwide to reference this specific compound in chemical databases, regulatory filings, and scientific literature. ChemContract Research supplies this compound with full quality documentation. Contact us at chemistry@chem-contract.com for availability and pricing.

Chemical analysis laboratory with HPLC instruments for purity and impurity testing Custom chemical synthesis reaction setup for pharmaceutical intermediate production

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