hexadecanal PALMITALDEHYDE 629-80-1 LMFA06000088 Palmitic aldehyde AI3-24252 EINECS 211-111-0 PLY PL3 16-Hexadecanal C00517 PALMITOYL Palmitaldehyde, 16-Hexadecanal CHEBI:17600 palmitoyl aldehyde c1216