2,4-Hexadienedioic acid, 3,4-dihydroxy-2,5-diphenyl-, gamma-lactone 26548-70-9 Acetic acid, (3-hydroxy-5-oxo-4-phenyl-2(5H)-furylidene)phenyl- Benzeneacetic acid, alpha-(3-hydroxy-5-oxo-4-phenyl-2(5H)-furanylidene)-, (E)- (9CI) Pulvic acid Pulvinic acid delta(sup 2(5H),alpha)-furanacetic acid, 3-hydroxy-5-oxo-alpha,4-diphenyl-