The authors regret that the IC50 values of compounds 15f, 15g and their respective dose response curves in Fig. 1 are incorrect and apologize for any inconvenience caused.

Fig. 1
figure 1

Dose response curve of s-Triazine derivatives on human cancer cell lines determined by MTT assay after 48 h treatment

Full size image

The correct IC50 are shown below in the Table 1 and correct dose response curves are displayed in Fig. 1.

Table 1 Chemical structures of compounds 13a–h and their inhibitory effects on the growth of human cancer cell lines
Full size table