PJ-34 hydrochloride. A potent poly(ADP-ribose) polymerase (PARP) inhibitor, Synonyms:-N-(6-Oxo-5,6-dihydro-phenanthridin-2-yl)-N,N-dimethylacetamide hydrochloride, CAS Number:-344458-15-7, Molecular Formula:-C1GH1GNGO2.HCl, Purity:-G98% by HPLC, 5mg.