Description

Benzenesulfonic Acid Impurity 48 is a high-purity chemical reference standard used for analytical and research purposes. This compound is critical for ensuring the quality, safety, and regulatory compliance of pharmaceutical products and fine chemicals. It is primarily utilized by analytical laboratories, quality control departments, and R&D teams in the pharmaceutical and chemical manufacturing industries for method development, validation, and impurity profiling.

Application

• Pharmaceutical Impurity Reference Standard: Used for the identification, qualification, and quantification of related substances in Active Pharmaceutical Ingredients (APIs) and drug products.
• Analytical Method Development & Validation: Serves as a critical component in developing and validating HPLC, GC, or LC-MS methods for purity analysis.
• Quality Control & Assurance: Employed as a system suitability standard and for routine batch testing to ensure product specifications are met.
• Regulatory Compliance & Documentation: Essential for preparing regulatory submissions (e.g., for FDA, EMA) that require detailed impurity characterization.
• Research & Development: Used in stability studies, degradation pathway elucidation, and synthetic chemistry research.
• Chemical Synthesis Intermediary: May act as a building block or intermediate in the synthesis of more complex sulfonated compounds.

Basic Information

Product Name	Benzenesulfonic Acid Impurity 48
CAS No.	3939-71-7
Molecular Formula	C6H6O3S
Molecular Weight	158.18 g/mol
Synonyms	Benzenesulfonic Acid; Benzenesulphonic Acid; Phenylsulfonic Acid; Besylic Acid; 1-Benzenesulfonic Acid; Benzene-1-sulfonic Acid; EINECS 223-526-1; Phenylsulphonic Acid
EINECS	223-526-1

Quality Control

Every batch of Benzenesulfonic Acid Impurity 48 is manufactured and tested under strict quality management systems. Our products undergo rigorous analytical testing, including HPLC, NMR, and mass spectrometry, to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing all test results and specifications is provided with each shipment to support your quality and regulatory requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive) and light-sensitive; precautions should be taken to minimize exposure to air and humidity during handling and storage.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (NMR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Water Content (KF)	≤ 1.0%
Residue on Ignition	≤ 0.1%

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