Description

4',5'-Dichloro-3',6'-Dihydroxyspiro[Isobenzofuran-1[3H]-9'-[9H]-Xanthene]-3-One is a high-purity, synthetic organic compound belonging to the xanthene dye family, valued for its distinct photophysical properties. This chemical is critical for applications requiring precise optical characteristics and consistent performance. It is primarily utilized by manufacturers and research institutions in the analytical chemistry, biotechnology, and specialty materials sectors.

Application

• Fluorescent Probe Synthesis: A key intermediate in the production of sensitive fluorescent dyes and molecular probes for bioimaging and diagnostics.
• Analytical Reagent Manufacturing: Used in formulating specialized reagents for spectrophotometric analysis and detection kits.
• Research & Development: Serves as a crucial building block in academic and industrial R&D for novel photochromic and electrochromic materials.
• Sensor Technology: Incorporated into the development of optical chemical sensors for environmental monitoring and process control.
• Specialty Dyes & Pigments: Acts as a precursor for high-performance dyes used in niche industrial and research applications.

Basic Information

Product Name	4',5'-Dichloro-3',6'-Dihydroxyspiro[Isobenzofuran-1[3H]-9'-[9H]-Xanthene]-3-One
CAS No.	2320-96-9
Molecular Formula	C₂₀H₁₀Cl₂O₅
Molecular Weight	401.20 g/mol
Synonyms	Dichlorofluorescein; 2',7'-Dichloro-3',6'-dihydroxyfluoran; 2',7'-Dichlorofluorescein; 3',6'-Dihydroxy-4',5'-dichlorofluoran; Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one, 4',5'-dichloro-3',6'-dihydroxy-; Fluorescein, 2',7'-dichloro-; C.I. 45350:2
EINECS	219-034-6

Quality Control

Our 4',5'-Dichloro-3',6'-Dihydroxyspiro[Isobenzofuran-1[3H]-9'-[9H]-Xanthene]-3-One is produced under a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure it meets exacting standards for research and industrial use. A Certificate of Analysis (COA) detailing all specifications 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 a controlled room temperature (15-25°C). This product is light-sensitive; prolonged exposure to light should be avoided to maintain stability.

Specification

Item	Specification
Appearance	Orange to red powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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