3-Methoxypropanoic Acid-d4 is an intermediate in synthesizing 3-Hydroxypropionic Acid-D4 Sodium Salt (H952482), a deuterium labelled analogue of 3-Hydroxypropionic Acid Sodium Salt (H952480), which is beta hydroxy acid derived from plants and crops such as corn. 3-Hydroxypropionic Acid is used in the preparation of acrylates and biodegradable polymer polyester.