nk 611

NK 611 is a new semisynthetic analogue of etoposide and has been found to be more potent against several cancer cell lines in vitro than etoposide.

Chlorodenafil is a related compound of Sildenafil -- a phosphodiesterase inhibitor.

NK-611 free acid is a new semisynthetic analogue of etoposide, which presumably also acts through inhibition of topoisomerase II, and has been found to be more potent against several cancer cell lines in vitro than etoposide.