Used as a key intermediate in the synthesis of pharmaceuticals, fine chemicals, and polyphenol derivatives such as gallic acid and other antioxidants. As a protected form of 3,4,5-trihydroxybenzaldehyde, its functional groups enable selective reactions, making it valuable in organic synthesis for building complex aromatic molecules. Also employed in the preparation of protected hydroxybenzaldehyde derivatives for multi-step syntheses involving controlled deprotection and coupling. Additionally, it is used in the cosmetics industry for developing anti-aging formulations and protecting skin from cellular degradation.