The chemical Hoechst 33342 (trihydrochloride) has a designated molecular formula of C27H31Cl3N6O and a molecular weight of 561.936 g/mol. Synonyms may include: Bisbenzimide ethoxide trihydrochloride, UNII-P976261J69, HOE-33342, Bisbenzimide H 33342, Bisbenzimide ethoxide trihydrochloride [MI], 2,5'-Bi-1H-benzimidazole, 2'-(4-ethoxyphenyl)-5-(4-methyl-1-piperazinyl)-, trihydrochloride, Hoechst-33342 (ChemID).