Description

3,4,5,6-Tetrachlorofluorescein is a halogenated derivative of fluorescein, a key chromophore and fluorescent dye intermediate. This compound is valued for its role in synthesizing specialized dyes and pigments with enhanced light-fastness and specific spectral properties. It serves as a critical precursor for researchers and manufacturers in the analytical chemistry, dye manufacturing, and life science reagent sectors.

Application

• Fluorescent Dye & Pigment Synthesis: A vital intermediate for producing xanthene-based dyes with modified absorption and emission characteristics.
• Analytical Chemistry Reagent: Used in the preparation of indicators and probes for biochemical assays and detection methods.
• Biological Staining: Potential use as a precursor for developing specialized stains for microscopy and cellular imaging.
• Photographic Sensitizer: Employed in the formulation of light-sensitive materials and photographic chemicals.
• Laser Dye Intermediate: Serves as a building block for synthesizing tunable organic laser dyes.
• Research & Development: A key chemical for academic and industrial R&D in organic synthesis and photochemistry.

Basic Information

Product Name	3,4,5,6-Tetrachlorofluorescein
CAS No.	6262-21-1
Molecular Formula	C₂₀H₈Cl₄O₅
Molecular Weight	470.09 g/mol
Synonyms	3,4,5,6-Tetrachlorofluorane; 2-(3,4,5,6-Tetrachloro-2,7-dihydroxy-3H-xanthen-9-yl)benzoic Acid; Tetrachlorofluorescein; 3,4,5,6-Tetrachloro-3',6'-dihydroxyfluoran; 3,4,5,6-Tetrachlorofluoran; Fluorescein, 3,4,5,6-tetrachloro-; C.I. 45350:2; Solvent Red 72
EINECS	228-416-4

Quality Control

Our 3,4,5,6-Tetrachlorofluorescein is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) detailing specifications and test results are provided to guarantee compliance with your research and production requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Orange to red powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Residue on Ignition	≤ 0.5%

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