4,5-Dichloro-3,6-dioxo-1,4-cyclohexadiene-1,2-dicarbonitrileDDQNSC 4010872,3-Dichloro-5,6-dicyano-p-quinone1,2-Dichloro-4,5-dicyano-p-benzoquinone2,3-Chloro-5,6-dicyanoquinoneDichlorodicyano-p-benzoquinoneDicyanodichloroquinone2,3-Dichloro-5,6-dicyanobenzoquinone