3-Amino-4-chlorobenzoic Acid (CAS 2840-28-0)
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Product Overview
3-Amino-4-chlorobenzoic Acid (CAS No. 2840-28-0) is an essential fine chemical building block used in high-end pharmaceutical synthesis. Unlike its nitro-precursors, this amino-functionalized form offers immediate reactivity for amide bond formation and rapid heterocyclic ring closure.
Its precise chemical structure makes it a vital component in the development of targeted oncology drugs and advanced medicinal chemistry. As a professional manufacturer, we ensure our product meets the stringent purity requirements needed for sensitive R&D and commercial production.

Technical Specifications
Core Applications & Research Use
3-Amino-4-chlorobenzoic acid is highly valued for its role in synthesizing life-saving therapeutics
- Oncology R&D: A primary building block for synthesizing anti-cancer drug candidates. Its structure is crucial for designing molecules that target specific tumor pathways.
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Antibacterial Agents: Used in the development of next-generation, broad-spectrum antibiotics to combat drug-resistant bacterial strains.
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Peptide & Peptidomimetic Synthesis: Employed to modify peptide backbones, enhancing the metabolic stability and bioavailability of peptide-based drugs.
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Advanced Organic Synthesis: A versatile intermediate for creating complex heterocyclic scaffolds in medicinal chemistry.
Why Choose Our CAS 2840-28-0?
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Optimized Reactivity: Our refined amino-form ensures cleaner reactions and higher yields compared to traditional nitro-reduction routes.
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Reliable Quality: Each batch is meticulously tested via HPLC to guarantee a purity of .
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R&D to Bulk Scales: We support your project from the initial lab-scale feasibility study to full-scale commercial manufacturing.
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Expert Technical Support: Our PhD-led team provides comprehensive documentation, including COA, MSDS, and HNMR spectra upon request.
Safety & Storage Guidelines
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Storage: Keep in a tightly closed container. Store in a cool, dry, and well-ventilated area away from incompatible substances.
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Handling: Use protective gloves, goggles, and respiratory protection. Avoid dust formation and ensure proper ventilation during use.
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