1,1'-Biphenyl, 3,3',4,4'-tetramethyl-
CAS 4920-95-0
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
$48.00/gKey Organics Ltd.
CountryUnited Kingdom
Pack$240.00 / 5 g
Purity95%
Vendors9 available
Prices reflect listed pack sizes. Small research packs run far above bulk rates.
8 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 |
|---|---|---|---|---|
| ALFA AESAR | Germany | $63.72 | 1 g | 98% |
| Combi-Blocks, Inc. | United States | $80.00 | 5 g | 98% |
| A2B Chem LLC | United States | $85.60 | 5 g | 98% |
| AK Scientific Specialized | United States | $86.40 | 5 g | 97% |
| Aaron Chemicals LLC | Hong Kong | $89.00 | 1 g | — |
| AA BLOCKS | United States | $90.40 | 5 g | 98% |
| Angene Chemical | China → Hong Kong | $91.00 | 1 g | 98% |
| Maybridge, Ltd. | United Kingdom | $2414.30 | 100 mg | 90% |
Chemical Identity
CAS4920-95-0
PubChem CIDNot recorded
DTXSIDDTXSID9074646
FormulaC16H18
Mol. Weight210.32 g/mol
SMILESCC1=C(C)C=C(C=C1)C1=CC(C)=C(C)C=C1
Data Sources
- EPA TSCA InventoryRetrieved 2026-10-04
Brief citations
1,1'-Biphenyl, 3,3',4,4'-tetramethyl- (CAS 4920-95-0) https://chemicalindependence.com/chemical/4920-95-0/ EPA TSCA Inventory: CAS 4920-95-0. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory