4-Methyl-2-pentenoic acid10321-71-8100 % similar Maleic acid110-16-752 % similar Fumaric acid110-17-852 % similar Poly(maleic acid)26099-09-252 % similar Crotonic acid3724-65-050 % similar 5-Methyl-3-hexen-2-one5166-53-050 % similar Sorbic acid110-44-144 % similar trans-2-Pentenoic acid13991-37-243 % similar Glutaconic acid1724-02-341 % similar Acrylic acid-maleic acid copolymer29132-58-941 % similar 2-Hexenoic acid1191-04-440 % similar trans-2-Hexenoic acid13419-69-740 % similar Monomethyl fumarate2756-87-840 % similar Monomethyl maleate3052-50-440 % similar 3-[4-(1-Methylethyl)phenyl]-2-propenoic acid3368-21-640 % similar Maleamic acid557-24-439 % similar 2,4-Pentadienoic acid626-99-339 % similar Maleic acid-methyl vinyl ether copolymer25153-40-639 % similar P-Phenylenediacrylic acid16323-43-638 % similar trans-2-Octenoic acid1871-67-636 % similar