SULFO J ACID (CAS NO : 6535-70-2)

Sulfo J Acid (CAS 131-91-9) is an essential naphthalene-based sulfonic acid utilized extensively within the North American specialty chemical sector, particularly as a high-purity fine chemical for the synthesis of advanced reactive dyes and pharmaceutical precursors where General Industry purity 98% is the standard for complex aromatic coupling. 2-Amino-5-naphthol-7-sulfonic acid serves as a vital component in the API intermediates market, where US-based CDMOs are increasingly leveraging custom synthesis services to develop novel therapeutic agents requiring Pharma/API purity 99% to ensure strict adherence to FDA-mandated impurity profiles. 7-Amino-4-hydroxynaphthalene-2-sulfonic acid is currently witnessing a significant demand shift as a bulk chemical supplier priority in the United States, driven by a strategic move toward domestic supply chain integration and a heightened focus on high-performance materials that require robust technical documentation and rigorous quality control. As an established dye and pharmaceutical intermediates suppliers in the united states, we ensure dependable supply, consistent quality, and complete regulatory documentation, including CoA and TDS across all grades. Beyond supply, we support partners through the entire product lifecycle from route scouting, process and formulation development, and analytical method development to scale-up, process optimisation, and pilot-to-commercial manufacturing. Our teams also assist with GMP-compliant quality assurance, regulatory documentation, and global supply chain and logistics coordination