4-溴-3-氯-2,5,6-三氟吡啶

1-氯-7-甲氧基萘

1,3-dibromodibenzofuran

2,2-dimethyl-4-oxido-1-oxa-4-azoniaspiro[4.5]dec-3-ene

5,5-dimethyl-3-oxido-2-phenyl-2H-1,3-oxazol-3-ium