2-Pyrazolin-5-one, 3-methyl-1-phenyl-4-((1-pyrrolidinyl)methylene)- 24664-56-0 3-Methyl-1-phenyl-4-((1-pyrrolidinyl)methylene)-2-pyrazolin-5-one 3-Methyl-1-phenyl-4-((N-pyrrolidino)methylene)-2-pyrazolin-5-one 5-25-14-00511 (Beilstein Handbook Reference) BRN 0798582