5,5-Dimethyl-11-oxo-5H,11H-(2)-benzopyrano(4,3-g)(1)benzopyran-9-carboxylic acid ethanolamine salt 5,5-Dimethyl-11-oxo-5H,11H-(2)benzopyrano(4,3-g)(1)benzopyran-9-carboxylic acid, compd. with 2-aminoethanol (1:1) 52156-73-7 NSC 293381 PR-D 92EA PR-D-92 PR-D-92-EA Prd-92 Ea