Description

1,2-Benzenediamine, 4-Ethynyl- (9Ci) is a specialized aromatic diamine derivative featuring a reactive ethynyl group, making it a valuable bifunctional building block for advanced organic synthesis. Its unique structure enables it to serve as a key precursor in the development of complex heterocyclic compounds, functional polymers, and pharmaceutical intermediates. This high-purity compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and materials science sectors seeking to incorporate novel aromatic and alkyne functionalities into their products.

Application

• Pharmaceutical Intermediate: A key synthon for the development of novel active pharmaceutical ingredients (APIs), particularly in oncology and central nervous system (CNS) drug discovery.
• Agrochemical Synthesis: Used in the research and production of advanced herbicides, fungicides, and plant growth regulators that require specific aromatic amine backbones.
• Polymer & Material Science: Serves as a monomer or cross-linking agent in the synthesis of specialty polymers, resins, and high-performance materials like polyimides.
• Ligand & Catalyst Development: Employed in the design and synthesis of novel chelating ligands and organometallic catalysts for asymmetric synthesis.
• Dye & Pigment Chemistry: Acts as a precursor for the synthesis of complex organic dyes, pigments, and colorants with enhanced properties.
• Research & Development: A valuable tool in academic and industrial R&D for exploring new chemical reactions and creating molecular libraries.

Basic Information

Product Name	1,2-Benzenediamine, 4-Ethynyl- (9Ci)
CAS No.	58297-31-7
Molecular Formula	C8H8N2
Molecular Weight	132.16 g/mol
Synonyms	4-Ethynyl-1,2-benzenediamine; 4-Ethynyl-o-phenylenediamine; 1,2-Diamino-4-ethynylbenzene; 4-Ethynylbenzene-1,2-diamine; 4-Ethynyl-1,2-diaminobenzene; o-Phenylenediamine, 4-ethynyl-
EINECS	Contact for details

Quality Control

Every batch of 1,2-Benzenediamine, 4-Ethynyl- (9Ci) is manufactured and tested under strict quality management systems to ensure consistency and reliability. Our products undergo rigorous quality testing, including advanced chromatographic and spectroscopic methods, to ensure compliance with industry standards and customer specifications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store under an inert atmosphere (e.g., nitrogen or argon) in a cool, dry, and well-ventilated place. Recommended long-term storage temperature is 2-8°C. Keep away from heat, sparks, open flames, and oxidizing agents.

Specification

Item	Specification
Appearance	Light yellow to brown crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 97.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Residue on Ignition	≤ 0.1%

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