Description

3',6'-Dichlorospiro[Benzo[C][1,2]Oxathiole-3,9'-Xanthene] 1,1-Dioxide is a high-purity, specialized organic compound belonging to the spirocyclic xanthene class, serving as a critical intermediate and functional dye precursor. Its unique molecular architecture, featuring a spiro center and dichloro substitution, is engineered to impart specific photophysical and chemical properties essential for advanced material science. This compound is primarily sought after by research institutions and industrial manufacturers in the analytical chemistry, sensor development, and specialty dye sectors for developing novel detection systems and functional materials.

Application

• Fluorescent Probe and Sensor Synthesis: A key building block for developing sensitive and selective fluorescent chemosensors for detecting metal ions (e.g., Hg²⁺, Cu²⁺) or anions in environmental and biological samples.
• Advanced Material Research: Used in the development of novel organic photonic materials, including light-emitting diodes (OLEDs) and nonlinear optical (NLO) materials due to its rigid, conjugated structure.
• Bioconjugation and Labeling Reagents: Serves as a reactive intermediate for synthesizing fluorescent tags and labels for biomolecules (proteins, nucleic acids) in bioimaging and diagnostic assays.
• Photocatalyst and Photoinitiator Components: Investigated for use in photo-redox catalysis and as a component in photoinitiator systems for polymerizations, leveraging its light-absorbing characteristics.
• Chemical Intermediate for Specialty Dyes: A crucial precursor in the multi-step synthesis of high-value, structurally complex xanthene and rhodamine derivatives for specialized industrial applications.

Basic Information

Product Name	3',6'-Dichlorospiro[Benzo[C][1,2]Oxathiole-3,9'-Xanthene] 1,1-Dioxide
CAS No.	77545-45-0
Molecular Formula	C₂₀H₁₀Cl₂O₄S
Molecular Weight	417.26 g/mol
Synonyms	3',6'-Dichloro-3H-spiro[2-benzofuran-1,9'-xanthene]-3-one 1,1-dioxide; 3',6'-Dichlorospiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one 1,1-dioxide; Dichlorospiro[benzo[c][1,2]oxathiole-3,9'-xanthene] S,S-dioxide; Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-3-one, 3',6'-dichloro-, 1,1-dioxide; 77545-45-0; DCSTO; Dichloro Spirobenzoxathiole Xanthene Dioxide
EINECS	Contact for details

Quality Control

Our 3',6'-Dichlorospiro[Benzo[C][1,2]Oxathiole-3,9'-Xanthene] 1,1-Dioxide is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical characterization, including HPLC for purity assessment, NMR and IR for structural confirmation, and elemental analysis. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to support your R&D and quality assurance requirements.

Storage

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

Specification

Item	Specification
Appearance	Yellow to orange 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%
Heavy Metals (as Pb)	≤ 10 ppm

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