Description

Benzenesulfonic Acid Impurity 9 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 required by analytical laboratories, quality control departments, and R&D facilities in the pharmaceutical and chemical manufacturing industries for method development, validation, and impurity profiling.

Application

• Pharmaceutical Impurity Reference Standard: Used as a certified reference material (CRM) for the identification 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 in routine QC testing to monitor and control impurity levels, ensuring batch-to-batch consistency and compliance with ICH guidelines.
• Regulatory Compliance & Documentation: Essential for preparing regulatory submission dossiers (e.g., for FDA, EMA) that require detailed impurity characterization.
• Research & Development: Used in chemical research to study degradation pathways, synthesis by-products, and stability profiles of benzenesulfonic acid derivatives.
• Calibration Standard: Acts as a precise calibration standard for analytical instrumentation to ensure accurate and reliable measurements.

Basic Information

Product Name	Benzenesulfonic Acid Impurity 9
CAS No.	64704-11-6
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	1,3-Benzenedisulfonic acid, 4,6-dichloro-5-nitro- (IUPAC); 4,6-Dichloro-5-nitro-1,3-benzenedisulfonic acid; 5-Nitro-4,6-dichlorobenzene-1,3-disulfonic acid; Benzenesulfonic acid impurity 9 (Pharmaceutical); 64704-11-6; Benzene-1,3-disulfonic acid, 4,6-dichloro-5-nitro-; 4,6-Dichloro-5-nitrobenzene-1,3-disulfonate
EINECS	Contact for details

Quality Control

Every batch of Benzenesulfonic Acid Impurity 9 is manufactured and analyzed under strict quality management systems. Our products undergo rigorous identity, purity, and impurity testing using advanced analytical techniques (HPLC, GC-MS, NMR) to ensure compliance with industry standards for reference materials. A comprehensive Certificate of Analysis (COA) detailing batch-specific results is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at controlled room temperature (15-25°C). Keep the container tightly sealed in a dry environment to protect the integrity of the reference standard.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single unknown impurity ≤ 0.5%
Residual Solvents (GC)	Complies with ICH Q3C
Water Content (KF)	≤ 0.5% w/w

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