Retinoid | Log Reduction Papilloma/mouse | NHK Clonal Growth (IC-50) |
trans-Retinoic acid | 0.6 | −9.5 |
cis-Retinoic acid | 0.42 | −9 |
trans Retinyl methyl ether | 0.13 | −8 |
4-Hydroxyphenylretinamide | 0.06 | −7.5 |
13-cis-N-Ethylretinamide | 0.19 | −6.5 |
trans -Retinoyl-glycine | 0.09 | −6.5 |
trans-Retinyl propyl ether | 0.05 | −6.25 |