.DELTA.2(5H),.alpha.-Furanacetic acid, 3-hydroxy-5-oxo-.alpha.,4-diphenyl-, methyl ester .delta.(sup 2(5H),.alpha.)-Furanacetic acid, 3-hydroxy-5-oxo-.alpha.,4-diphenyl-, methyl ester 2,4-Hexadienedioic acid, 3,4-dihydroxy-2,5-diphenyl-, mono-.gamma.-lactone, methyl ester 521-52-8 Acetic acid, (3-hydroxy-5-oxo-4-phenyl-2(5H)-furylidene)phenyl-, methyl ester Benzeneacetic acid, .alpha.-(3-hydroxy-5-oxo-4-phenyl-2(5H)-furanylidene)-, methyl ester Benzeneacetic acid, .alpha.-(3-hydroxy-5-oxo-4-phenyl-2(5H)-furanylidene)-, methyl ester, (E)- NSC5897 VULPINIC ACID WLN: T5VOYJ CUYR&VO1 DQ ER