(Diacetylmethylene)diphenylselenurane 2,4-PENTADIONE, SELENIUM COMPLEX 2,4-Pentanedione, selenium complex 37890-13-4 NSC306827 Selenium, (1-acetyl-2-oxopropylidene)diphenyl- Selenonium, diphenyl-, 1-acetyl-2-oxopropylide