分类号 |
C07C233/73;C07C235/34;C07C235/36;C07C235/38;C07C235/46;C07C235/48;C07C235/50;C07C235/54;C07C235/56;C07C235/66;C07C237/20;C07C237/22;C07C237/32;C07C237/42;C07C237/44;C07C255/60;C07C271/16;C07C275/28;C07C311/46;C07C317/28;C07C323/42;C07C323/60;C07C323/62;C07D233/60;C07D295/13;C07D295/185;C07D295/192 |
主分类号 |
C07C233/73 |