Description

1,1'-(Sulphonyldi-3,1-Phenylene)Bis-1H-Pyrrole-2,5-Dione is a high-purity specialty chemical intermediate featuring a bis-maleimide structure linked by a sulfonyl-bridged diphenylene core. This compound matters for its role as a critical building block in the synthesis of advanced polymers and functional materials, offering excellent thermal stability and reactivity. It is primarily needed by manufacturers in the pharmaceutical, agrochemical, and high-performance polymer industries for developing novel active ingredients and engineered resins.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of novel drug candidates, particularly those targeting specific enzyme inhibition.
• Agrochemical Synthesis: Used in the development of advanced herbicides and fungicides, leveraging its reactive maleimide groups.
• Polymer Cross-linking Agent: Acts as a cross-linker in the production of high-temperature resistant polyimides and epoxy resins.
• Material Science Research: Employed in R&D for creating new organic electronic materials and photoactive compounds.
• Specialty Adhesives & Coatings: Incorporated into formulations requiring enhanced thermal and chemical stability.

Basic Information

Product Name	1,1'-(Sulphonyldi-3,1-Phenylene)Bis-1H-Pyrrole-2,5-Dione
CAS No.	68555-55-5
Molecular Formula	C22H14N2O6S
Molecular Weight	434.42 g/mol
Synonyms	4,4'-(Sulfonylbis(1,3-phenylene))bis(1H-pyrrole-2,5-dione); Bis(4-maleimidophenyl) Sulfone; 4,4'-Bismaleimidodiphenyl Sulfone (BMIS); 1,1'-[Sulfonylbis(3,1-phenylene)]bis-1H-pyrrole-2,5-dione; Bis(3-maleimidophenyl) Sulfone; BMIS; Sulfonyl-bridged Bismaleimide; Diphenylsulfone Bismaleimide
EINECS	Contact for details

Quality Control

Every batch of 1,1'-(Sulphonyldi-3,1-Phenylene)Bis-1H-Pyrrole-2,5-Dione is manufactured under strict quality management systems. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance and regulatory compliance needs.

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. The product is light-sensitive and should be handled accordingly to maintain stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals	≤ 20 ppm

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