SYNONYM PEG-4 diheptanoate;Heptanoic acid, oxybis (2,1-ethanediyloxy-2,1-ethanediyl) ester; Oxybis (2,1-ethanediyloxy-2,1-ethanediyl) heptanoate; PEG 200 diheptanoate; POE (4) diheptanoate; TEGDH Tetraethylene glycol di-n-heptanoate CAS # 70729-68-9