Description

4,4'-(1,6-Hexanediylbis(Carbonylamino))Bis(5-Hydroxy-2,7-Naphthalenedisulfonic Acid) is a high-purity, specialized organic intermediate featuring a symmetrical bis-sulfonated naphthalene structure linked by a hexamethylene diurea spacer. This compound matters for its unique combination of strong acidity, chelating ability, and water solubility, making it a valuable building block for advanced functional materials. It is primarily needed by R&D and production teams in the fine chemical, pharmaceutical, and specialty dye industries for synthesizing complex molecules, metal complexing agents, and polymeric materials.

Application

• Pharmaceutical Intermediate: Used in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those requiring sulfonic acid groups for solubility or biological activity.
• Metal Chelation & Catalysis: Serves as a ligand for constructing transition metal complexes used in homogeneous catalysis or as analytical reagents.
• Specialty Dye & Pigment Synthesis: Acts as a key precursor for creating water-soluble, high-color-strength azo dyes and functional pigments.
• Polymer Modification: Incorporated into polymer backbones (e.g., polyurethanes, polyamides) to impart hydrophilicity, ionic character, or specific binding sites.
• Analytical Chemistry Reagent: Employed in the development of chromogenic or fluorogenic probes and sensors due to its naphthalene fluorophore and ionizable groups.
• Cross-linking Agent: Utilized in the preparation of cross-linked hydrogels or resins for separation media or controlled release systems.

Basic Information

Item	Details
Product Name	4,4'-(1,6-Hexanediylbis(Carbonylamino))Bis(5-Hydroxy-2,7-Naphthalenedisulfonic Acid)
CAS No.	147646-62-6
Molecular Formula	C28H30N4O14S4
Molecular Weight	758.82 g/mol
Synonyms	1,6-Hexanediylbis[carbonylimino(5-hydroxy-2,7-naphthalenedisulfonic acid)]; 4,4'-(Hexane-1,6-diylbis(ureylene))bis(5-hydroxynaphthalene-2,7-disulfonic acid); HNUDS; Hexamethylene bis(5-hydroxy-2,7-naphthalenedisulfonylurea); Bis(5-hydroxy-2,7-naphthalenedisulfonic acid) hexamethylenediurea derivative
EINECS	Contact for details

Quality Control

Our 4,4'-(1,6-Hexanediylbis(Carbonylamino))Bis(5-Hydroxy-2,7-Naphthalenedisulfonic Acid) is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and physical characteristics. Our quality commitment aligns with cGMP principles for pharmaceutical intermediates, ensuring reliability for your critical synthesis workflows.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Yellow to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents (GC)	Meets ICH guidelines

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