What is 4-Hydroxybenzaldehyde (CAS: 123-08-0)?

4-Hydroxybenzaldehyde is an aromatic organic compound with the chemical formula C7H6O2. It contains a hydroxyl group and an aldehyde group attached to a benzene ring. This compound is known for its mild aromatic properties and is commonly used as a precursor in organic synthesis. Its CAS number is 123-08-0, and it is also referred to as para-hydroxybenzaldehyde. It is a white solid with a faintly sweet odor and is soluble in organic solvents.