1,3-Cyclopentadiene, 1,2,3,4-tetramethyl-
CAS 4249-10-9
EPA and Census publish no US supply data for this chemical.
US productionNot reported
Top sourceNo public record
This chemical is listed as active in US commerce, but no company reported it to EPA’s survey for 2019 or 2023. Sites may have made or imported less than the threshold amount, or none.
Why supply is unknownWhere It Comes From
EPA and Census publish no US supply data for this chemical.
Why It Matters
No EPA sector or FDA product records name a use for this chemical.
Vendor Pricing
$10.40/gAmbeed, Inc.
CountryUnited States
Pack$1040.00 / 100 g
Purity98%
Vendors10 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
9 more vendors
| Vendor | Country Supplier country. Where available, shows shipping origin. When the supplier ships from a different country than where they are registered, both are shown. Most suppliers show registration country only. | $/g | Pack | Purity |
|---|---|---|---|---|
| Aaron Chemicals LLC | Hong Kong | $11.04 | 100 g | 95% |
| Angene Chemical | China → Hong Kong | $11.79 | 100 g | 95% |
| A2B Chem LLC | United States | $14.20 | 25 g | 98% |
| AA BLOCKS | United States | $31.48 | 25 g | 98% |
| Sigma-Aldrich (Rush Stock) | Germany | $34.12 | 5 g | 85% |
| Sigma-Aldrich | Germany | $34.12 | 5 g | 85% |
| Combi-Blocks, Inc. | United States | $34.60 | 25 g | 85% |
| ALFA AESAR | Germany | $72.48 | 5 g | 85% |
| Angene | China → Hong Kong | $4266.67 | 30 mg | 95% |
Chemical Identity
CAS4249-10-9
PubChem CIDNot recorded
DTXSIDDTXSID90195277
FormulaC9H14
Mol. Weight122.211 g/mol
SMILESCC1=C(C)C(C)=C(C)C1
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
1,3-Cyclopentadiene, 1,2,3,4-tetramethyl- (CAS 4249-10-9) https://chemicalindependence.com/chemical/4249-10-9/ EPA TSCA Inventory: CAS 4249-10-9. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory