In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Kinetics and mechanism of the acetalation of 5-substituted furfural, published in 1971, which mentions a compound: 2689-65-8, mainly applied to furfural acetals formation kinetics, Formula: C5H3IO2.
The rate of formation of acetals from 5-substituted furfurals (I, R = Er2N, Me2N, Me, H, Cl, Br, I, NO2) and pentaerythritol dichlorohydrin, MeC(CH2OH)3, EtC(CH2OH)3, or BuOH in C6H6 in the presence of KU-2 cation-exchange resin (H form) increased in the stated order of R and alcs. The rate constants correlated with the Brown σn+ constants of R.
In addition to the literature in the link below, there is a lot of literature about this compound(5-Iodo-2-furaldehyde)Formula: C5H3IO2, illustrating the importance and wide applicability of this compound(2689-65-8).
Reference:
1,8-Naphthyridine – Wikipedia,
1,8-Naphthyridine | C8H6N2 – PubChem