IAET is a cleavable, photoactivable cross linking agent. The maximum length of the linker arm between Ca of the amino acid of interest and the photoreactive atom is 14A. The IAET absorbance maxima are:
l max = 273nm; e= 2.3 x 104 ; l max = 343nm; e=8.0 x 103
![S-[2-(IODO-4-AZIDOSALICYLAMIDO)ETHYLTHIO]-2-THIOPYRIDINE](https://www.chemicalbook.com/CAS/GIF/175093-14-8.gif)
