纯度要求不高85%以上也可以。

参考文献：Yuan, Y., et al., Targeted theranostic platinum(IV) prodrug with a built-in
aggregation-induced emission light-up apoptosis sensor for noninvasive early
evaluation of its therapeutic responses in situ. J Am Chem Soc, 2014. 136(6): p. 2546-54.