基本信息：
Name：1,4-dimethoxy-5,8-dioxo-5,6,7,8-tetrahydronaphthalene-2-carbaldehyde
CAS：99502-83-7
Chemical Formula: C13H12O5
Molecular Weight: 248.2340
m/z: 248.0685 (100.0%), 249.0718 (14.1%), 250.0727 (1.0%)
Elemental Analysis: C, 62.90; H, 4.87; O, 32.23