N-[(E)-(4-chlorophenyl)methylideneamino]-2,4-dinitroaniline; 4-chloro-benzaldehyde-(2,4-dinitro-phenylhydrazone); 4-Chlor-anisol-diazonium-(2),Fast Red Salt RCN; Benzenediazonium,5-chloro-2-methoxy; 4-Chlor-benzaldehyd-(2,4-dinitro-phenylhydrazon); p-Chlorbenzaldehyd-2.4-dinitrophenylhydrazon