The chemical Fast green FCF has a designated molecular formula of C37H34N2Na2O10S3 and a molecular weight of 808.843 g/mol. Synonyms may include: C.I. 42053, C.I. Food Green 3, C.I. Food Green 3, disodium salt, 1724 Green, Aizen Food Green No. 3, Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)(4-hydroxy-2-sulfophenyl)methylene)-2,5-C, CCRIS 1867, EINECS 219-091-5, Fast Green FCF, FD & C Green No. 3 (ChemID).