Description

3,3'-Diphthalide is a high-purity organic chemical intermediate characterized by its unique bis-phthalide structure. This compound is valued for its role as a versatile building block in the synthesis of complex molecules, particularly in advanced material science and specialty chemistry. It is essential for manufacturers and R&D laboratories in the pharmaceutical, agrochemical, and polymer industries seeking to develop novel compounds with specific functional properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of active pharmaceutical ingredients (APIs) and complex heterocyclic compounds.
• Agrochemical Synthesis: Used in the development of advanced herbicides, fungicides, and plant growth regulators.
• Polymer & Material Science: Serves as a monomer or cross-linking agent for creating high-performance polymers, resins, and specialty coatings.
• Organic Light-Emitting Diodes (OLEDs): A building block for electron-transport materials and emissive layer components in display technologies.
• Ligand & Catalyst Development: Utilized in the preparation of novel ligands for catalytic systems in asymmetric synthesis.
• Dye & Pigment Industry: An intermediate for producing specialized colorants and optical brighteners.
• Academic & Industrial Research: A valuable reagent for methodological development and exploring new chemical reactions in organic chemistry.

Basic Information

Product Name	3,3'-Diphthalide
CAS No.	4281-21-4
Molecular Formula	C16H10O4
Molecular Weight	266.25 g/mol
Synonyms	3,3'-Biphthalidylidene; 1,1'-(1,2-Ethanediyl)bis-1H-isoindole-1,3(2H)-dione; Bis(1,3-dioxoisoindolin-2-yl)methane; 2,2'-(Methylenedi-1,3-isoindolinediyl)bis-1,3-isoindolinedione; 3,3'-Bis(phthalidylidene); Diphthalidylmethane
EINECS	224-287-4

Quality Control

Our 3,3'-Diphthalide is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets the high standards required for sensitive synthetic applications. Certificates of Analysis (COA) detailing all specifications are provided with each shipment to guarantee traceability and batch-to-batch consistency.

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 strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
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.