4053-08-1;1H,3H-Naphtho(1,8-cd)pyran-1,3-dione, 6-chloro-;4-Chloronaphthalene-1,8-dicarboxylic anhydride;4-Chloronaphthalic anhydride;6-Chloro-1H,3H-naphtho(1,8-cd)pyran-1,3-dione;EINECS 223-760-7;Naphthalic anhydride, 4-chloro- (7CI,8CI);ST5308339;AH-034/32464018;6-Chloronaphtho[1,8,8a-c,d]pyran-1,3-dione;02228_FLUKA;4-Chloro-1,8-naphthalic anhydride