Description

1,3-Bis(Methylene)Cyclopentane is a highly reactive, low molecular weight diene characterized by its unique strained-ring structure and two exocyclic methylene groups. This compound serves as a valuable and versatile building block in advanced organic synthesis, particularly for Diels-Alder cycloaddition reactions and polymer cross-linking. It is primarily sought after by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for creating novel molecular architectures and materials with tailored properties.

Application

• Pharmaceutical Intermediate: A key precursor in the synthesis of complex, bicyclic or polycyclic active pharmaceutical ingredients (APIs) via cycloaddition chemistry.
• Agrochemical Synthesis: Used to construct novel heterocyclic scaffolds for crop protection agents and herbicides.
• Specialty Polymer & Resin Production: Acts as a cross-linking agent or comonomer to introduce rigidity and thermal stability into polymers, resins, and coatings.
• Material Science Research: Employed in the development of new organic frameworks, dendrimers, and advanced functional materials.
• Fine Chemical Manufacturing: Serves as a versatile diene component in custom synthesis and contract manufacturing for high-value chemical products.

Basic Information

Product Name	1,3-Bis(Methylene)Cyclopentane
CAS No.	59219-48-6
Molecular Formula	C7H10
Molecular Weight	94.15 g/mol
Synonyms	1,3-Dimethylenecyclopentane; Bicyclo[3.2.0]hepta-1,4-diene; 1,3-Cyclopentadiene, 5-methylene-; 5-Methylene-1,3-cyclopentadiene; NSC 163045; 1,3-Bis(methylidene)cyclopentane; 1,3-Di(methylene)cyclopentane
EINECS	Contact for details

Quality Control

Every batch of 1,3-Bis(Methylene)Cyclopentane is produced and tested under stringent quality management protocols to ensure consistency and purity for demanding synthetic applications. Our products undergo rigorous quality testing, including chromatographic purity analysis and identity confirmation, to ensure compliance with industry standards. Certificates of Analysis (COA) detailing batch-specific results are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Due to its highly volatile nature, store in a cool, well-ventilated place, preferably at 2-8°C (refrigerated) or under conditions recommended on the specific material safety data sheet. Keep away from heat, sparks, and open flame. Containers should be kept tightly sealed when not in use to prevent evaporation and potential degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Purity (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%

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