In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Synthesis and biological evaluation of novel bis-quaternary ammonium compounds with p-terphenyl spacer, published in 2020-07-31, which mentions a compound: 693-67-4, Name is 1-Bromoundecane, Molecular C11H23Br, Formula: C11H23Br.
Bis-quaternary ammonium compounds I·2 Br- [R = H(CH2)n; n = 7, 8, 9, 10, 11] with a p-terphenyl spacer between two pyridinium heads were synthesized. I·2 Br- (n = 8) was superior to the known benzalkonium chloride, miramistin and chlorhexidine bisgluconate in its MIC values against five pathogenic bacteria.
In some applications, this compound(693-67-4)Formula: C11H23Br is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.
Reference:
Tetrahydroisoquinoline – Wikipedia,
1,2,3,4-Tetrahydroisoquinoline | C9H11N – PubChem