1-Chloro-4-isocyanatobenzene 104-12-1 4-Chloroisocyanatobenzene 4-Chlorophenyl isocyanate Benzene, 1-chloro-4-isocyanato- EINECS 203-176-9 HSDB 1331 ISOCYANIC ACID, P-CHLOROPHENYL ESTER NSC 76589 PCPI p-Chlorfenylisokyanat [Czech] p-Chlorophenyl isocyanate para-Chlorophenyl isocyanate