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2,3,4-Trihydroxybenzaldehyde is a versatile aromatic compound belonging to the class of polyphenolic aldehydes. With the molecular formula C7H6O4 and a precise molecular weight of 154.12 g/mol, this substance features a benzene ring substituted with three hydroxyl groups at the ortho, meta, and para positions relative to an aldehyde functional group. Its primary CAS Registry Number is 80-67-9, which serves as its unique identifier in chemical databases and regulatory frameworks globally. The compound typically appears as a pale yellow to light brown crystalline powder or solid, characterized by high solubility in polar organic solvents such as ethanol and methanol, while exhibiting moderate solubility in water due to its multiple hydrophilic hydroxyl moieties.
In terms of applications, 2,3,4-trihydroxybenzaldehyde holds significant value in pharmaceutical research and synthetic chemistry. It serves as a crucial intermediate in the synthesis of various bioactive heterocyclic compounds, including flavonoids, coumarins, and other natural product analogs known for their antioxidant, anti-inflammatory, and antimicrobial properties. Researchers frequently utilize this molecule as a building block for constructing complex drug candidates targeting oxidative stress-related diseases. Furthermore, its structural similarity to naturally occurring phenolics makes it an ideal probe for studying enzymatic reactions involving catechol oxidases or peroxidases in biochemical assays. In materials science, derivatives of this aldehyde are explored for developing novel chelating agents and corrosion inhibitors due to their strong metal-binding capabilities derived from the adjacent hydroxyl groups. Despite its utility, handling requires standard laboratory safety precautions, as polyphenolic compounds can be sensitive to oxidation and light exposure, potentially leading to discoloration or degradation if not stored under appropriate conditions like cool, dark environments in sealed containers. Overall, 2,3,4-trihydroxybenzaldehyde remains an essential reagent bridging fundamental organic synthesis with advanced therapeutic development.