109-17-1 2-Propenoic acid, 2-methyl-, oxybis(2,1-ethanediyloxy-2,1-ethanediyl) ester Methacrylic acid, diester with tetraethylene glycol Methacrylic acid, oxybis(ethyleneoxyethylene) ester NSC84253 TGM-4 Tetraethylene glycol, dimethacrylate Tetraethyleneglycol dimethacrylate