"0"^^ . . "114615822"^^ . . "14615822-n"^^ . . . . "methacrylic acid"@en-us . . . "0"^^ . "an unsaturated acid (C4H6O2) used to make resins and plastics"@en-us . "methacrylic acid"^^ . . "113779380"@en-us . "2-methylpropenoic acid"@en-us . . . .