Description

2,7-Dihydroxyspiro[9H-Xanthene-9,1'(3'H)-Isobenzofuran]-3'-One is a high-purity, specialized organic compound belonging to the spirocyclic xanthene class, serving as a critical building block in advanced material synthesis. Its unique fused-ring structure provides valuable photophysical and chemical properties essential for developing next-generation functional materials. This compound is primarily sought by R&D and production teams in the pharmaceutical, organic electronics, and specialty dye and pigment industries for creating novel substances with tailored performance characteristics.

Application

• Pharmaceutical Intermediate: Acts as a key precursor in the synthesis of novel active pharmaceutical ingredients (APIs), particularly those requiring complex, rigid molecular frameworks.
• Organic Light-Emitting Diodes (OLEDs): Used in the development of host or dopant materials for OLED displays and lighting due to its potential electroluminescent properties.
• Fluorescent Probe & Sensor Development: Serves as a core structure for creating sensitive chemical sensors and bio-imaging agents, leveraging its xanthene-based fluorescence.
• Specialty Dyes and Pigments: Functions as an intermediate for synthesizing high-performance, color-fast dyes used in inks, coatings, and advanced textiles.
• Photoinitiator & Photoresist Component: Employed in formulations for UV-curable coatings, adhesives, and photoresists in the electronics manufacturing sector.
• Academic & Industrial Research: Utilized as a standard or starting material in organic chemistry research for studying spirocyclic compounds and their reactions.

Basic Information

Item	Detail
Product Name	2,7-Dihydroxyspiro[9H-Xanthene-9,1'(3'H)-Isobenzofuran]-3'-One
CAS No.	596-04-3
Molecular Formula	C20H12O5
Molecular Weight	332.31 g/mol
Synonyms	Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3',7-diol-3-one; 2,7-Dihydroxyspiro[isobenzofuran-1,9'-xanthen]-3-one; Fluorescein lactone; 3',6'-Dihydroxyfluoran lactone; Resorcinolphthalein lactone; 2,7-Dihydroxy-3H-spiro[isobenzofuran-1,9'-xanthen]-3-one; 3',6'-Dihydroxyspiro[isobenzofuran-1,9'-xanthen]-3-one
EINECS	209-885-2

Quality Control

Every batch of 2,7-Dihydroxyspiro[9H-Xanthene-9,1'(3'H)-Isobenzofuran]-3'-One is manufactured and tested under a strict quality management system. We employ advanced analytical techniques including HPLC, GC, and NMR to ensure identity, purity, and consistency meet the high standards required for research and industrial synthesis. A comprehensive Certificate of Analysis (COA) detailing all specification 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 a controlled room temperature (15-25°C). Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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