The following 14 substances (and one reclassified substance) have been added to the National Toxicology Program's (NTP) list of 184 existing known or anticipated human carcinogens. These will be included in their Eighth Report on Carinogens.
| cyclosporin | 1,8-dinitropyrene |
| thiotepa | disperse blue 1 |
| azacitidine | furan |
| p-chloro-o-toluidine and its HCl salt | o-nitroanisole |
| chlorozotocin | 6-nitrochrysene |
| danthron | 1-nitropyrene |
| 1,6-dinitropyrene | 4-nitropyrene |
| 1,2,3-trichoropropane |
Use of these substances must be in accordance with the procedures for Particularly Hazardous Substances in our Chemical Hygiene Plan.