Lodoxamide Tromethamine: C~11~H~6~ClN~3~O~6~ 2C~4~H~11~NO~3~. Mw: 553.90. (1) Acetic acid, 2,2′-[(2-chloro-5-cyano-1,3-phenylene)diimino]bis[2-oxo-, compound with 2-amino-2-(hydroxymethyl)-1,3-propanediol (1:2); (2) N,N’-(2-Chloro-5-cyano-m-phenylene)dioxamic acid compound with 2-amino-2-(hydroxymethyl)-1,3-propanediol (1:2). CAS-63610-09-3; CAS-53882-12-5 (lodoxamide)(1978).