Synonyms: (1,3-Dimesitylimidazolidin-2-ylidene)(tricyclohexylphosphine)benzylideneruthenium dichloride;(1,3-Dimesitylimidazolin-2-ylidene)(tricyclohexylphosphine)rutheniumdichloride;Benzylidene(1,3-dimesitylimidazolidin-2-ylidene)(tricyclohexylphosphine)rutheniumdichloride;Benzylidenedichloro(1,3-dimesitylimidazolidin-2-ylidene)(tricyclohexylphosphine)ruthenium;Grubbs Catalyst 2nd. generation;Grubbs II catalyst;Grubbs-Herrmann catalyst;Grubbs'Ru-dihydroimidazolylidene catalyst;Second generation Grubbs catalyst;[1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene]dichloro(phenylmethylene)(tricyclohexylphosphine)ruthenium;