Description

3'-(4-Guanidinobenzoyloxy)Spiro(Isobenzofuran-1-(3H),9'-(9H)Xanthen)-3-One is a specialized, high-purity chemical intermediate of significant importance in advanced organic synthesis. This compound matters for its role as a key building block in the development of sensitive diagnostic reagents and fluorescent probes. It is primarily needed by research institutions and manufacturers in the pharmaceutical, biotechnology, and life science sectors for applications requiring precise molecular labeling and detection.

Application

• Fluorescent Probe Synthesis: A critical precursor for creating advanced fluorescent dyes and molecular tags used in bioimaging and cellular analysis.
• Diagnostic Reagent Development: Used in the research and production of reagents for clinical diagnostics and immunoassays.
• Bioconjugation Chemistry: Serves as an active ester intermediate for labeling proteins, antibodies, and other biomolecules.
• Life Science Research: Employed in academic and industrial R&D for developing novel detection systems and assay platforms.
• Pharmaceutical Analysis: Utilized in the development of analytical methods and as a reference standard in quality control.

Basic Information

Item	Detail
Product Name	3'-(4-Guanidinobenzoyloxy)Spiro(Isobenzofuran-1-(3H),9'-(9H)Xanthen)-3-One
CAS No.	97165-32-7
Molecular Formula	C29H19N3O5
Molecular Weight	489.48 g/mol
Synonyms	4-Guanidinobenzoic Acid, Fluorescein Derivative; 4-Guanidinobenzoyl Fluorescein; GBF; Fluorescein-4-Guanidinobenzoate; 3'-(4-Guanidinobenzoyloxy)fluorescein; Spiro[isobenzofuran-1(3H),9'-[9H]xanthen]-3-one, 3'-(4-guanidinobenzoyloxy)-; Fluorescent Guanidinobenzoate Ester
EINECS	Contact for details

Quality Control

Our 3'-(4-Guanidinobenzoyloxy)Spiro(Isobenzofuran-1-(3H),9'-(9H)Xanthen)-3-One is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via spectroscopic methods, to ensure it meets the high standards required for research and diagnostic applications. Certificates of Analysis (COA) with detailed specifications are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). This product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 95.0%
Water Content (KF)	≤ 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.