Butanal, 4-(phenylmethoxy)-

4-(Benzyloxy)butanal (4-Benzyloxybutanal) is a linker with an acid labile, benzyl protecting group and a reactive primary aldehyde. The primary aldehyde can react with hydrazide and aminooxy groups which are commonly used in biomolecular probes for labeling and crosslinking carbonyls (oxidized carbohydrates).

Tetrahedron, 53, p. 8853, 1997 DOI: 10.1016/S0040-4020(97)90396-3