Description

5-Hydroxysulfapyridine is a key sulfonamide derivative and an important pharmaceutical intermediate. This compound matters for its role in the synthesis of specialized active pharmaceutical ingredients (APIs) and for research into novel therapeutic agents. It is primarily needed by manufacturers and R&D teams in the pharmaceutical, biotechnology, and fine chemical sectors for developing new drug candidates and high-value chemical products.

Application

• Pharmaceutical Intermediate: A critical building block in the synthesis of advanced sulfonamide-based active pharmaceutical ingredients (APIs).
• Research & Development: Used in academic and industrial laboratories for pharmacological studies and the development of new therapeutic compounds.
• Fine Chemical Synthesis: Serves as a specialized reagent in multi-step organic synthesis for creating complex molecules.
• Biochemical Research: Employed in studies investigating enzyme inhibition and metabolic pathways.
• Reference Standard: Used as an analytical standard in quality control laboratories for method development and validation.

Basic Information

Product Name	5-Hydroxysulfapyridine
CAS No.	50930-57-9
Molecular Formula	C11H11N3O3S
Molecular Weight	265.29 g/mol
Synonyms	5-Hydroxysalazosulfapyridine; 5-Hydroxy Sulfasalazine; 5-Hydroxy SASP; 5-HSA; 5-Hydroxy-2-hydroxy-5-[4-(pyridin-2-ylsulfamoyl)phenyl]diazenyl]benzoic acid; N-(Pyridin-2-yl)-4-[(2-hydroxy-5-hydroxyphenyl)diazenyl]benzenesulfonamide
EINECS	Contact for details

Quality Control

Our 5-Hydroxysulfapyridine is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets high-grade specifications suitable for pharmaceutical intermediate applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

Storage

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

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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