(5-((4-(4-Chlorophenoxy)phenyl)azo)-3-cyano-6-hydroxy-4-methyl-2-oxo-(2H)-pyridine-1-propyl)(trimethyl)ammonium chloride 1(2H)-Pyridinepropanaminium, 5-((4-(4-chlorophenoxy)phenyl)azo)-3-cyano-6-hydroxy-N,N,N,4-tetramethyl-2-oxo-, chloride 71873-54-6 EINECS 276-128-8