Synonyms: 1,3-Dimesitylimidazolidin-2-ylidene;1,3-Bis(2,4,6-trimethylphenyl)-4,5- dihydroimidazol-2-ylidene, min. 98%;1,3-Bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene;1,3-Bis(2,4,6-trimethyphenyl)4,5- dihydroimidazol-2-ylidene;1,3-Bis(2,4,6-trimethylphenyl)imidazolidin-2-ylidene;IMesH2;SIMes;1,3-Bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene,98%