释义 |
1-phenyl-3-pyrazolidinone 1-phenyl-3-pyrazolidinone[¦wən ¦fen·əl ¦thrē ‚pī·rə·zə′lid·ən‚ōn] (organic chemistry) C9H10N2O A crystalline compound soluble in dilute aqueous solutions of acids and alkalies; melting point is 121°C; used as a high-contrast photographic developer. |