Description

9,9'-Spirobi[9H-Xanthene] is a high-purity, symmetrical organic compound belonging to the spirocyclic aromatic hydrocarbon class. This compound is valued for its rigid, three-dimensional structure and excellent photophysical properties, making it a critical intermediate in advanced material synthesis. It is primarily sought by R&D and production teams in the pharmaceutical, agrochemical, and specialty chemical industries for developing novel functional materials, including organic light-emitting diodes (OLEDs) and photoresists.

Application

• Pharmaceutical Intermediate: Serves as a key building block in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• OLED Material Development: Used as a core structure or host material in the research and production of organic light-emitting diodes for displays and lighting.
• Functional Polymer Synthesis: Acts as a monomer or cross-linking agent to create polymers with enhanced thermal stability and specific optical properties.
• Agrochemical Research: Employed in the development of new crop protection agents and pesticides due to its structural complexity.
• Dye and Pigment Industry: Functions as a precursor for synthesizing high-performance dyes, pigments, and fluorescent markers.
• Academic & Industrial R&D: A valuable reagent for chemical research, catalysis studies, and material science exploration.

Basic Information

Product Name	9,9'-Spirobi[9H-Xanthene]
CAS No.	159-49-9
Molecular Formula	C25H16O2
Molecular Weight	348.39 g/mol
Synonyms	Spirobixanthene; 9,9'-Spirobixanthene; 9,9'-Spirobi[9H-fluorene-9,9'-xanthene]; 9H,9'H-Spirobi[xanthene]; 9,9'-Spirobi[9H-fluorene] (related); Xanthene, 9,9'-spirobi[9H-; Spiro[9H-xanthene-9,9'-[9H]xanthene]
EINECS	205-877-7

Quality Control

Our 9,9'-Spirobi[9H-Xanthene] is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC, NMR, and GC-MS, to ensure high purity and batch-to-batch consistency. Certificates of Analysis (COA) detailing all specifications are provided and available upon request to support your quality assurance protocols.

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 heat sources and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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