Rifapentine is a long-acting, cyclopentyl-substituted derivative of rifamycin used to treat mycobacterium infections.

Levofloxacin Hemihydrate is a broad-spectrum, third-generation fluoroquinolone antibiotic and optically active L-isomer of ofloxacin with antibacterial activity.

10-Hydroxycamptothecin is a DNA topoisomerase I inhibitor with potent anti-tumor activity.

Camptothecin is an alkaloid isolated from the stem wood of the Chinese tree, Camptotheca acuminata. This compound selectively inhibits the nuclear enzyme DNA Ttopoisomerase I (Topo I).

Raltitrexed, quinazoline folate analogue with antineoplastic activity, is a thymidylate synthase inhibitor.

Procarbazine Hydrochloride is the hydrochloride salt of a methylhydrazine derivative with antineoplastic and mutagenic activities.

Etoposide is a semisynthetic derivative of podophyllotoxin, which inhibits DNA synthesis by forming a complex with topoisomerase II and DNA.

Epirubicin hydrochloride, an anthracycline which is the 4'-epi-isomer of doxorubicin, exerts its antitumor effects by interference with the synthesis and function of DNA.