Notice of intent to list 18 chemicals by the authoritative bodies or "formally required" mechanisms: 1-Amino-2,4-dibromoanthraquinone, C.I. Direct Blue 15, C.I. Direct Blue 218, 3,7-Dinitrofluoranthene, 3,9-Dinitrofluoranthene, Nitrobenzene, Estropipate, Ganciclovir sodium, Amiodarone hydrochloride, Atenolol, Ethionamide, Goserelin acetate, Leuprolide acetate, Paclitaxel, Quazepam, Trimetrexate glucuronate