| Member | Definition | Role |
|---|
| 1,4,7-triazacyclononane | | 1,4,7-triazonane |
| azetidine | | azetidine |
| aziridine | | aziridine |
| cyclam | | 1,4,8,11-tetraazacyclotetradecane |
| cyclen | An azacycloalkane that is cyclododecane in which the carbon atoms at positions 1, 4, 7 and 10 are replaced by nitrogen atoms. | 1,4,7,10-tetraazacyclododecane |
| hexahydroazepine | An azacycloalkane that is cycloheptane in which one of the carbon atoms is replaced by a nitrogen atom. | azepane |
| imidazolidines | | imidazolidine |
| piperazine | An azacycloalkane that consists of a six-membered ring containing two nitrogen atoms at opposite positions. | piperazine |
| piperidine | An azacycloalkane that is cyclohexane in which one of the carbons is replaced by a nitrogen. It is a metabolite of cadaverine, a polyamine found in the human intestine. | piperidine |
| plerixafor | An azamacrocycle consisting of two cyclam rings connected by a 1,4-phenylenebis(methylene) linker. It is a CXCR4 chemokine receptor antagonist and a hematopoietic stem cell mobilizer. It is used in combination with grulocyte-colony stimulating factor (G-CSF) to mobilize hematopoietic stem cells to the perpheral blood for collection and subsequent autologous transplantation in patients with non-Hodgkin's lymphoma and multiple myeloma. | plerixafor |
| pyrrolidine | A cyclic amine whose five-membered ring contains four carbon atoms and one nitrogen atom; the parent compound of the pyrrolidine family. | pyrrolidine |