Description

3-Amino-5-Ethynylbenzoic Acid is a multifunctional aromatic compound featuring both an amino and an ethynyl group on a benzoic acid scaffold. This unique structure makes it a valuable high-purity building block for advanced organic synthesis and pharmaceutical research. It is primarily utilized by R&D chemists and process development scientists in the pharmaceutical, agrochemical, and material science industries for constructing complex molecular architectures.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of targeted small molecule drugs, kinase inhibitors, and other bioactive compounds.
• Agrochemical Research: Building block for developing novel herbicides, fungicides, and plant growth regulators.
• Material Science & Polymer Chemistry: Monomer or cross-linking agent for creating specialty polymers, dendrimers, and conductive materials via click chemistry (e.g., CuAAC).
• Chemical Biology & Bioconjugation: Used to introduce alkyne handles into molecules for subsequent labeling or conjugation with azides via bioorthogonal reactions.
• Organic Synthesis Reagent: Versatile synthon for constructing complex heterocycles and functionalized aromatic systems in academic and industrial research.
• Ligand Synthesis for Catalysis: Precursor for creating novel ligands used in transition metal catalysis.

Basic Information

Product Name	3-Amino-5-Ethynylbenzoic Acid
CAS No.	1639866-72-0
Molecular Formula	C9H7NO2
Molecular Weight	161.16 g/mol
Synonyms	5-Ethynyl-3-aminobenzoic Acid; 3-Amino-5-ethynylbenzoic acid; Benzoic acid, 3-amino-5-ethynyl-; 3-Carboxy-5-ethynylaniline
EINECS	Contact for details

Quality Control

Our 3-Amino-5-Ethynylbenzoic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure high purity and consistency, meeting the stringent requirements for research and development applications. Certificates of Analysis (COA) with detailed chromatographic and spectroscopic data are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed to exclude moisture.

Specification

Item	Specification
Appearance	Off-white to light yellow powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Water Content (KF)	≤ 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.