2(5H)-Pyrimidinethione, 4,6-dihydroxy-S-piperonylidene- 4,6(1H,5H)-Pyrimidinedione, 5-(1,3-benzodioxol-5-ylmethylene)dihydro-2-thioxo- 4,6-Dihydroxy-5-piperonylidene-2(5H)-pyrimidinethione 5-Piperonylidene-2-thiobarbituric acid 74051-76-6 Barbituric acid, 5-piperonylidene-2-thio- NSC89379 WLN: T56 BO DO CHJ G1U- ET6NYN EYJ BS DQ FQ