Description

2-(3,6-Dihydroxyxanthen-9-Yl)Benzoic Acid, Sodium Salt is a high-purity, water-soluble xanthene derivative widely used as a key intermediate in the synthesis of advanced fluorescent dyes and biological stains. This compound matters for its role in producing highly sensitive and photostable probes essential for modern analytical and diagnostic applications. It is primarily needed by manufacturers in the life sciences, analytical chemistry, and specialty chemical sectors for developing reagents used in fluorescence microscopy, flow cytometry, and bioassays.

Application

• Fluorescent Dye Synthesis: A crucial precursor for manufacturing rhodamine and fluorescein-based dyes.
• Biological Staining Reagents: Used in the production of stains for cellular imaging, histology, and fluorescence microscopy.
• Diagnostic Assay Development: Serves as an intermediate for fluorescent labels and probes in immunoassays and nucleic acid detection kits.
• Laser Dye Intermediates: Employed in the synthesis of dyes for tunable dye lasers and optical applications.
• Sensor Technology: Used in the development of chemical sensors and indicators for pH and metal ion detection.
• Research & Development: A valuable building block in academic and industrial R&D for novel photonic and bio-imaging materials.

Basic Information

Product Name	2-(3,6-Dihydroxyxanthen-9-Yl)Benzoic Acid, Sodium Salt
CAS No.	54287-24-0
Molecular Formula	C20H11NaO5
Molecular Weight	354.29 g/mol
Synonyms	Benzoic acid, 2-(3,6-dihydroxy-9H-xanthen-9-yl)-, sodium salt; Sodium 2-(3,6-dihydroxyxanthen-9-yl)benzoate; Fluorescein sodium salt intermediate; 9-(2-Carboxyphenyl)-3,6-dihydroxyxanthene sodium salt; 3',6'-Dihydroxyfluoran sodium salt; Rhodamine precursor sodium salt; Xanthene dye intermediate
EINECS	Contact for details

Quality Control

Our 2-(3,6-Dihydroxyxanthen-9-Yl)Benzoic Acid, Sodium Salt is produced under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for use in sensitive applications. Certificates of Analysis (COA) documenting purity, heavy metals, and related substances are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed in a low-humidity environment to prevent degradation.

Specification

Item	Specification
Appearance	Orange to red powder
Identification (IR)	Conforms
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Heavy Metals (as Pb)	≤ 20 ppm
Residual Solvents	Meets ICH guidelines

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