3524-06-9
5-甲氧基苯并呋喃 3-氧化物
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62053-76-3
7-methoxy-3-methyl-4-oxido-1-oxoquinoxalin-1-ium-2-carbaldehyde
18080-50-7
7-methoxy-2,3-dimethylquinoxaline-1,4-di-N-oxide