Date published: 2026-4-26

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1,2,3,4-Tetramethyl-1,3-cyclopentadiene (CAS 4249-10-9)

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CAS Number:
4249-10-9
Molecular Weight:
122.21
Molecular Formula:
C9H14
Supplemental Information:
This is classified as a Dangerous Good for transport and may be subject to additional shipping charges.
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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1,2,3,4-Tetramethyl-1,3-cyclopentadiene (TMCD) is a cyclic hydrocarbon compound with a unique structure. Its composition consists of a four-membered ring comprising two carbon atoms and two methyl groups. In organic synthesis, it serves as a starting material for the synthesis of diverse compounds, including heterocyclic and bicyclic compounds. In polymer synthesis, 1,2,3,4-Tetramethyl-1,3-cyclopentadiene acts as a monomer, enabling the synthesis of polymers with distinctive properties. The exact mechanism of action of 1,2,3,4-Tetramethyl-1,3-cyclopentadiene is not fully understood however, it is believed that 1,2,3,4-Tetramethyl-1,3-cyclopentadiene can interact with an array of enzymes and receptors.


1,2,3,4-Tetramethyl-1,3-cyclopentadiene (CAS 4249-10-9) References

  1. Tunable Redox Potential, Optical Properties, and Enhanced Stability of Modified Ferrocene-Based Complexes.  |  Paul, A., et al. 2019. ACS Omega. 4: 14780-14789. PMID: 31552317
  2. The Methyl Torsion in Unsaturated Compounds.  |  Zachariou, A., et al. 2020. ACS Omega. 5: 2755-2765. PMID: 32095699
  3. Gastroprotective Effect of Ethanol Extracts from Bark of Magnolia officinalis on Ethanol-Induced Gastric Mucosal Damage in Rats.  |  Wang, X., et al. 2021. Biomed Res Int. 2021: 6688414. PMID: 34159200

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

1,2,3,4-Tetramethyl-1,3-cyclopentadiene, 1 g

sc-251566
1 g
$124.00

1,2,3,4-Tetramethyl-1,3-cyclopentadiene, 5 g

sc-251566A
5 g
$505.00