Synonyms: [1,3-Bis(2,4,6-triMethylphenyl)-2-iMidazolidinylidene]dichloro[[2-(2-oxopropoxy)phenyl]Methylene]rutheniuM(II);Umicore M52;UMicore M52, 15% Ru, Product of UMicore;[1,3-Bis(2,4,6-trimethylphenyl)-2-imidazolidinylidene]dichloro[[2-[2-oxopropoxy]phenyl]methylene]ruthenium