Fluorinated urethans were first synthesized in this laboratory (1, 2) with the object of enhancing the cancer therapeutic properties of urethan. It has been found (3) that, in general, monofluorourethans are more active and more toxic than trifluorourethans when
![Carbamic acid,[(4-chlorophenyl)methylene]bis-, diethyl ester (9CI)结构式](https://image.chemsrc.com/caspic/032/92018-97-8.png)
