Description

3',6'-Dihydroxy-3-Oxo-Spiro(Isobenzofuran-1(3H),9'-9H-Xanthene)-6-Carboxylic Acid 2-((Phosphonothio)Acetyl)Hydrazide is a sophisticated organic compound that serves as a critical intermediate and functional building block in advanced chemical synthesis. Its unique molecular architecture, featuring a spirocyclic xanthene core coupled with a phosphonothiohydrazide moiety, makes it highly valuable for creating specialized materials with tailored properties. This compound is primarily sought by research institutions and industrial R&D departments focused on developing novel pharmaceuticals, agrochemicals, and high-performance functional dyes.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of novel drug candidates, particularly those targeting enzyme inhibition or requiring specific molecular recognition properties.
• Agrochemical Research: Used in developing next-generation pesticides and herbicides, where its phosphonothio group can contribute to biological activity.
• Functional Dye & Pigment Synthesis: The xanthene fluorophore core makes it a valuable starting material for creating specialized fluorescent probes, sensors, and high-stability colorants.
• Material Science: Employed in the development of advanced polymers and coatings that require specific light-absorbing or chelating properties.
• Bioconjugation & Probe Development: The reactive hydrazide and carboxylic acid groups facilitate its use in labeling biomolecules for diagnostic and research applications.
• Catalysis & Ligand Design: Serves as a complexing agent or ligand precursor in catalytic systems for organic transformations.

Basic Information

Product Name	3',6'-Dihydroxy-3-Oxo-Spiro(Isobenzofuran-1(3H),9'-9H-Xanthene)-6-Carboxylic Acid 2-((Phosphonothio)Acetyl)Hydrazide
CAS No.	151890-75-4
Molecular Formula	C24H17NO9PS
Molecular Weight	535.43 g/mol
Synonyms	2-((Phosphonothio)acetyl)hydrazide of 3',6'-Dihydroxy-3-oxospiro[isobenzofuran-1(3H),9'-[9H]xanthene]-6-carboxylic acid; Fluorescein Phosphonothiohydrazide Derivative; Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-6-carboxylic acid, 3',6'-dihydroxy-3-oxo-, 2-[(phosphonothio)acetyl]hydrazide; CAS 151890-75-4
EINECS	Contact for details

Quality Control

Our production of 3',6'-Dihydroxy-3-Oxo-Spiro(Isobenzofuran-1(3H),9'-9H-Xanthene)-6-Carboxylic Acid 2-((Phosphonothio)Acetyl)Hydrazide adheres to stringent quality protocols to ensure batch-to-batch consistency and purity for research and development purposes. Each lot is characterized using advanced analytical techniques including HPLC, NMR, and mass spectrometry. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance and regulatory documentation needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This compound is light-sensitive and should be handled under appropriate conditions to prevent degradation. For long-term storage, consider inert atmosphere conditions.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (HPLC)	Conforms
Identification (IR)	Conforms
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.