Description

Benzenesulfonic Acid,5-Azido-2-Formyl-,Sodium Salt (CAS NO 55305-94-7) is a specialized aromatic sulfonate derivative featuring both azido and formyl functional groups. This unique bifunctional structure makes it a valuable photoaffinity labeling reagent and a versatile chemical building block for synthesizing complex molecules. It is primarily utilized by research institutions and pharmaceutical companies engaged in proteomics research, bioconjugation, and the development of novel chemical probes.

Application

• Photoaffinity Labeling (PAL): Acts as a key reagent in PAL studies to covalently capture and identify transient protein-ligand interactions.
• Bioconjugation & Click Chemistry: The azido group enables efficient copper-catalyzed azide-alkyne cycloaddition (CuAAC) for labeling biomolecules.
• Chemical Probe Synthesis: Serves as a precursor for creating activity-based probes (ABPs) and other diagnostic tools in chemical biology.
• Pharmaceutical Intermediate: Used in the research and development of new active pharmaceutical ingredients (APIs), particularly for targeted therapies.
• Material Science Research: Employed in the surface functionalization of polymers and nanomaterials to introduce specific chemical handles.
• Cross-linking Agent: Can be used to create covalent cross-links between molecules under controlled photolytic conditions.

Basic Information

Product Name	Benzenesulfonic Acid,5-Azido-2-Formyl-,Sodium Salt
CAS No.	55305-94-7
Molecular Formula	C7H4N3NaO4S
Molecular Weight	249.18 g/mol
Synonyms	5-Azido-2-formylbenzenesulfonic acid sodium salt; Sodium 5-azido-2-formylbenzenesulfonate; 2-Formyl-5-azidobenzenesulfonic acid sodium salt; Azido-formylbenzenesulfonate sodium; Photoaffinity labeling reagent; PAL reagent; Bioconjugation reagent; Click chemistry reagent
EINECS	Contact for details

Quality Control

Our Benzenesulfonic Acid,5-Azido-2-Formyl-,Sodium Salt is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity, critical for sensitive research applications. Each lot is accompanied by a comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles. We support research and development with materials that meet the stringent requirements of GMP/GLP-compliant laboratories.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). This compound is light-sensitive (store away from light). Keep away from heat, sparks, and open flame. For long-term storage, consider storing under an inert atmosphere to preserve stability.

Specification

Item	Specification
Appearance	Yellow to orange crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residual Solvents (GC)	Complies with ICH guidelines

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