Camptothecin

Formula : C20-H16-N2-O4
CAS : 7689-03-04 

An alkaloid isolated from the stem wood of the Chinese tree, Camptotheca acuminata. This compound selectively inhibits the nuclear enzyme DNA TOPOISOMERASES, TYPE I. Several semisynthetic analogs of camptothecin have demonstrated antitumor activity.

Camptothecin sodium

Formula : C20-H18-N2-O5.Na
CAS : 25387-67-1 

An alkaloid isolated from the stem wood of the Chinese tree, Camptotheca acuminata. This compound selectively inhibits the nuclear enzyme DNA TOPOISOMERASES, TYPE I. Several semisynthetic analogs of camptothecin have demonstrated antitumor activity.

Camptothecin, 10-amino-

Formula : C20-H17-N3-O4
CAS : 86639-63-6 

Induces regression of human ovarian carcinomas grown in mice & distinguishes between non-tumorigenic & tumorigenic cells in vitro.