| 4-oxo-2-phenyl-3(4h)-quinazolinepropanoic aci compd. with piperazine (2:1) |
| 4-oxo-2-phenyl-3(4h)-quinazolinepropanoic acid compd. with piperazine (2:1) |
| piperazine, bis(4-oxo-2-phenyl-3(4h)-quinazolinepropanoate) |
| 4-oxo-2-phenyl-3(4h)-quinazolinepropanoic acicompd. with piperazine (2:1) |
