3840921 -OEChem-02060822582D 0 0 0 0 0 0 0 0 0999 V2000 M END > 3840921 > 2 > ChemIDplus > UQ8977600 > NIOSH/UQ8977600 > 3-Pyrazolin-5-one, 4-butyl-3-methyl-1-(4-pyridyl)- 4-Butyl-3-methyl-1-(4-pyridyl)-3-pyrazolin-5-one UQ8977600 > UQ8977600 > http://chem.sis.nlm.nih.gov/chemidplus/ > http://chem.sis.nlm.nih.gov/chemidplus/direct.jsp?result=advanced®no=UQ8977600 $$$$