5-氨基-2，2-二氯戊醛，纯度越高越好，后期需要将氨基连接在-COOH材料表面

5-amino-2,2-dichloropentanal
Chemical Formula: C5H9Cl2NO
Molecular Weight: 170.0330
m/z: 169.0061 (100.0%), 171.0032 (63.9%), 173.0002 (10.2%), 170.0095 (5.4%), 172.0065 (3.5%)
Elemental Analysis: C, 35.32; H, 5.34; Cl, 41.70; N, 8.24; O, 9.41