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 Luminescent humidity sensors based on porous Ln3+-MOFs, published in 2012, which mentions a compound: 2208-59-5, mainly applied to luminescent humidity sensor porous lanthanide metal organic framework, Formula: C12H9N3.
Two new types of luminescence-based Ln3+-MOF humidity sensors were reported. The humidity sensing is successfully realized by controlling O-H oscillators on the Ln3+ emitters through host-guest H-bonding interactions.
After consulting a lot of data, we found that this compound(2208-59-5)Formula: C12H9N3 can be used in many types of reactions. And in most cases, this compound has more advantages.
Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles