Notes: L-Azidohomoalanine is a clickable form of the non-proteinogenic amino acid L-homoalanine (L-2-aminobutyric acid; Item No. 38750).{66595} It is composed of an L-methionine derivative functionalized with a clickable azide group. L-Azidohomoalanine has been used for semiquantitative analysis of newly synthesized proteins in A549 epithelial cancer cells and neural progenitor cells derived from patients with fragile X syndrome.{66595,66594}