1,3-Di-6-quinolylurea 532-05-8 Babesan Bis(6-quinolyl)urea N,N'-Diquinolyl-6-urea NSC71881 Urea, 1,3-di-6-quinolyl- Urea, N,N'-di-6-quinolinyl- sym.-Di-(6-quinolyl)urea