3,6,9,15-Tetraazabicyclo(9.3.1)pentadeca-1(15),11,13-triene

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Cat Number

INT78668345

CAS Number

78668-34-5

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Product Detail Description Customer Q&A

CAS Number

78668-34-5

Synonyms

1,4,7,10-tetraaza-2,6-pyridinecyclopentadiene

Molecular Formula

C11H18N4

Molecular Weight

206.29

Smiles

C12=NC(=CC=C1)CNCCNCCNC2

Boiling Point

366.5℃

pKa

9.69

General Description

3,6,9,15-Tetraazabicyclo(9.3.1)pentadeca-1(15),11,13-triene is a macrocyclic polyamine, also known as PCTA. Its bicyclic structure contains four nitrogen atoms integrated into the ring system, making it a highly effective ligand for forming stable coordination complexes.

Mechanism of Action

It functions as a powerful chelating agent. The cyclic arrangement of the nitrogen atoms creates a pre-organized cavity that allows it to bind highly stable complexes with various transition metal and lanthanide ions.

Application

It is extensively used in the synthesis of contrast agents for MRI and in nuclear medicine for radiopharmaceutical labeling due to its superior metal-binding stability.