Background : Bendamustine, a bifunctional alkylating agent with anticipated purin-like properties is active in metastatic breast cancer (MBC) patients.

苯达莫司汀，具有和嘌呤类似的双相功能在转移性乳腺（MBC）患者中发挥作用。

The catalysts on studying can divide into two kinds: the transition metal bifunctional catalysts and the nitride, carbide and oxycarbide catalysts of transition metals.

目前,正丁脱氢异构催分为两类,过渡金属双功能催和过渡金属氮物、碳物和碳氧物催。