Einecs 245-219-4

1-(methacryloyloxymethyl)ethyl hydrogen maleate

Maleic acid 1-[2-(methacryloyloxy)-1-methylethyl] ester

[1-methyl-2-[(2-methyl-1-oxoallyl)oxy]ethyl] hydrogen maleate

(Z)-2-Butenedioic acid hydrogen 1-[1-methyl-2-[(2-methyl-1-oxo-2-propenyl)oxy]ethyl] ester