1,2-Dichloro-4-isothiocyanatobenzene 3,4-Dichlorophenyl isothiocyanate 4-12-00-01271 (Beilstein Handbook Reference) 6590-94-9 BRN 0511101 Benzene, 1,2-dichloro-4-isothiocyanato- (9CI) EINECS 229-526-0 ISOTHIOCYANIC ACID, 3,4-DICHLOROPHENYL ESTER NSC 220236