Isophthalaldehyde
Isophthalaldehyde is an organic compound with the formula CH(CHO). It is one of three isomers of benzene dicarbaldehyde, a reduced analog of phthalic acid. It is colorless, although commercial samples often appear yellowish. One preparation entails the Sommelet reaction of α,α'-diamino-ortho-xylene. Reactions and use. Like many benzaldehydes, isophthalaldehyde forms a variety of Schiff base derivatives. Being bifunctional (having two formyl groups), isophthalaldehyde allows the formation of networks upon reaction with diamines.