请告知纯度和提供的报告

Name:2-amino-4-(7-hydroxy-2-oxo-2H-chromen-4-yl)butanoic acid

Chemical Formula: C13H13NO5

Molecular Weight: 263.2490

m/z: 263.0794 (100.0%), 264.0827 (14.1%), 265.0836 (1.0%)

Elemental Analysis: C, 59.31; H, 4.98; N, 5.32; O, 30.39