2,3,4-Trimethoxy-5,7,8,9-tetrahydro-6H-benzocyclohepten-6-one oxime 4-08-00-02817 (Beilstein Handbook Reference) 50823-55-7 6-Oximido-2,3,4-trimethoxybenzocycloheptane 6H-BENZOCYCLOHEPTEN-6-ONE, 5,7,8,9-TETRAHYDRO-2,3,4-TRIMETHOXY-, OXIME BRN 2661917