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4-Aminobenzenesulfonic acid (CAS 121-57-3) is a vital building block in the North American API intermediates market, serving as a primary precursor for the synthesis of sulfonamide antibiotics where Pharma/API purity 99% is mandatory to satisfy stringent FDA quality benchmarks. p-Anilinesulfonic acid (CAS 121-57-3) has seen surging demand from US-based CDMOs who require high purity fine chemicals to support the domestic expansion of antimicrobial drug development while navigating global sourcing shifts toward more resilient, onshore supply chains. 4-Sulfoaniline (CAS 121-57-3) remains indispensable for the general industry at a purity of 98%, particularly as a critical intermediate for high-performance azo dyes and optical brighteners where US manufacturers seek a reliable bulk chemical supplier offering custom synthesis services and comprehensive technical documentation to maintain competitive manufacturing standards. We are an established Sulfanilic acid intermediates supplier with >= 99% purity in the united states, ensuring minimal carry-over of impurities in the final API, and a broad range of various pharmaceutical intermediates for API manufacturers and finished formulators, providing comprehensive analytical (HPLC/NMR/MS) and supporting Sulfanilic acid COA/TDS/SDS region-specific regulatory support. reliable lead times, worldwide supply chain capabilities
4-Aminobenzenesulfonic acid (CAS 121-57-3) is a vital building block in the North American API intermediates market, serving as a primary precursor for the synthesis of sulfonamide antibiotics where Pharma/API purity 99% is mandatory to satisfy stringent FDA quality benchmarks. p-Anilinesulfonic acid (CAS 121-57-3) has seen surging demand from US-based CDMOs who require high purity fine chemicals to support the domestic expansion of antimicrobial drug development while navigating global sourcing shifts toward more resilient, onshore supply chains. 4-Sulfoaniline (CAS 121-57-3) remains indispensable for the general industry at a purity of 98%, particularly as a critical intermediate for high-...
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Dyes and Pigments
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Acid Dyes
Acid Dyes (Monoazo Based)
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Chemical Properties & Specifications
P261, P272, P280, P302+P352, P333+P313, P321, P363, and P501
Skin Sens. 1 (100%)
Eye Irrit. 2 (89.5%)
A primary chemical building block utilized in the synthesis of diverse azo dyes, including methyl orange and Orange II, for applications in the textile, leather, and food industries
A critical precursor in the organic synthesis of sulfonamides and other antimicrobial agents used in medicinal chemistry
A specialized reagent employed in the quantitative colorimetric analysis of nitrate and nitrite ions via diazonium coupling reactions
A versatile intermediate used for the functionalization of single-walled carbon nanotubes and as a dopant in the chemical synthesis of polyaniline
An organic compound used in the manufacture of pesticides and agents for the prevention and control of wheat rust.
Sulfanilic acid, also known as 4-aminobenzenesulfonic acid, is a synthetic organic compound primarily used as a raw material and intermediate in the production of azo dyes, optical brighteners, and sulfonamide pharmaceuticals
This compound is widely utilized in the textile, pharmaceutical, food, paper, and construction industries for the manufacturing of colorants, antibiotics, and concrete additives
It is soluble in water (approximately 10 g/L at 20 °C) and sodium carbonate solutions, and it is frequently used in aqueous-based synthesis and diazotization reactions
Standard specifications include CAS number 121-57-3, high purity (typically ≥99%), and documentation such as COA, TDS, impurity reports, and regulatory compliance documents
Scimplify has capabilities for global distribution and custom synthesis through an integrated network of manufacturers and logistics partners with reliable lead time
The product is export ready with a standard MOQ starting from 100 kgs, with lead times for international customers depending on the shipping destination and specific grade.
