Sinusoidin
Sinusoidin is a term that has appeared in a small number of scattered publications and online glossaries but does not correspond to a widely recognized chemical substance, natural product, or biomolecule. There is no entry for sinusoidin in major chemical databases such as PubChem or ChemSpider, and no peer‑reviewed article provides a confirmed structure, spectral data, or an isolation report for a compound by this name. Because of the lack of verifiable data, the exact meaning of sinusoidin remains unclear, and the term may represent a provisional alias, a misspelling, or a misattribution associated with another compound.
Some informal sources have reportedly used sinusoidin to describe a pigment or small molecule said to occur
As a result, there is no established information on the synthesis, reactivity, natural occurrence, biological activity,