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Grubbs 2nd generation catalyst

CAS 246047-72-3

Ruthenium, [1,3-bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene]dichloro(phenylmethylene)(tricyclohexylphosphine)-, (SP-5-41)-

EPA and Census publish no US supply data for this chemical.

Molecular structure of 246047-72-3
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 unknown

Where 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.

Chemical Identity

CAS246047-72-3
PubChem CIDNot recorded
DTXSIDDTXSID901014845
FormulaC46H65Cl2N2PRu
Mol. Weight848.98 g/mol
SMILESC1CCC(CC1)P(C1CCCCC1)C1CCCCC1.CC1=CC(C)=C(N2CCN(C2=[Ru](Cl)(Cl)=CC2=CC=CC=C2)C2=C(C)C=C(C)C=C2C)C(C)=C1

Data Sources

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Brief citations

Grubbs 2nd generation catalyst (CAS 246047-72-3) https://chemicalindependence.com/chemical/246047-72-3/ EPA TSCA Inventory: CAS 246047-72-3. Retrieved 2026-10-04. https://www.epa.gov/tsca-inventory