Description

3-Diazo-3,4-Dihydro-4-Oxo-1-Naphthalenesulfonyl Chloride is a specialized diazonaphthoquinone sulfonyl chloride derivative, a key photoactive intermediate in advanced chemical synthesis. Its value lies in its unique molecular structure, which enables precise functionalization and serves as a critical precursor for high-performance materials. This compound is essential for researchers and manufacturers in the photoresist, pharmaceutical, and specialty polymer industries, where it is used to create light-sensitive compounds and sophisticated chemical architectures.

Application

• Photoresist Chemistry: A fundamental photoactive compound (PAC) precursor for the synthesis of diazonaphthoquinone (DNQ) sulfonate esters, which are critical components in positive-tone photoresists for semiconductor and microelectronics manufacturing.
• Pharmaceutical Intermediates: Serves as a versatile building block for the synthesis of complex drug molecules, particularly those requiring sulfonamide or naphthalene-based scaffolds with photo-labile protecting groups.
• Polymer Functionalization: Used to introduce photo-crosslinkable or acid-generating moieties into polymer backbones for advanced coatings, adhesives, and imaging materials.
• Chemical Biology Probes: Acts as a reagent for labeling biomolecules due to its reactive sulfonyl chloride group and light-sensitive diazo functionality, useful in photoaffinity labeling studies.
• Dye and Pigment Synthesis: An intermediate in the production of specialized azo dyes and high-performance organic pigments where the diazo group is integral to color formation.
• Advanced Material Research: Employed in academic and industrial R&D for developing novel photo-responsive materials, sensors, and organic electronic components.

Basic Information

Item	Details
Product Name	3-Diazo-3,4-Dihydro-4-Oxo-1-Naphthalenesulfonyl Chloride
CAS No.	32505-50-3
Molecular Formula	C₁₀H₅ClN₂O₃S
Molecular Weight	268.67 g/mol
Synonyms	1,2-Naphthoquinone-2-diazide-4-sulfonyl Chloride; 1,2-Naphthoquinonediazide-4-sulfonyl Chloride; 1,2-Naphthoquinone-2-diazide-4-sulfonyl Chloride; DNQ-4-Sulfonyl Chloride; 4-Sulfonyl Chloride-1,2-naphthoquinone-2-diazide; 2-Diazo-1(2H)-naphthalenone-4-sulfonyl Chloride; 3-Diazo-4-oxo-3,4-dihydronaphthalene-1-sulfonyl Chloride
EINECS	Contact for details

Quality Control

Our 3-Diazo-3,4-Dihydro-4-Oxo-1-Naphthalenesulfonyl Chloride is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation by FT-IR and NMR spectroscopy, to ensure it meets exacting standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is strictly light-sensitive and hygroscopic; therefore, containers must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) in a desiccated environment to prevent moisture absorption and decomposition. Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Water Content (KF)	≤ 0.5%
Heavy Metals	≤ 20 ppm

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