Title: Maleanilic Acid

CAS Registry Number: 555-59-9

CAS Name: (Z)-4-Oxo-4-(phenylamino)-2-butenoic acid

Additional Names: N-phenylmaleamic acid

Molecular Formula: C10H9NO3

Molecular Weight: 191.18

Percent Composition: C 62.82%, H 4.74%, N 7.33%, O 25.11%

Literature References: Use of esters as fungicides: Ligett et al., US 2885319 (1959 to Pittsburgh Coke & Chem.).

Properties: Monoclinic yellow crystals, dec 192°. Apparent density 1.418 g/ml at 30°. Soly in g/100 ml soln at 27°: acetonitrile 0.2; acetone 0.3; benzene <0.1; butyl Cellosolve 1.1; carbon tetrachloride <0.1; chloroform <0.1; dimethylformamide 12.9; dioxane 0.9; ethanol 0.2; ether <0.1; methanol 0.3; toluene <0.1; water <0.1. Shows hydrolysis in aq soln. Dissociates to maleic anhydride and aniline when heated above 100° in vacuo.

Density: Apparent density 1.418 g/ml at 30°

Use: Esters as fungicides.