hydroxybenzaldehyde derivative. Its synthesis by Vielsmeyer-Haack reaction and confirmation of the product formation by 1H NMR has been reported. Its structure has been investigated.The sodium salt of 4-hydroxy-2,6-dimethoxybenzaldehyde may be used to derivatize Merrifield resin to form resin-bound aldehyde.2,6-Dimethoxy-4-hydroxybenzaldehyde (4-hydroxy-2,6-dimethoxybenzaldehyde) may be used as a test compound to investigate the bactericidal activity of benzaldehydes against Campylobacter jejuni, Escherichia coli, Listeria monocytogenes and Salmonella enterica. hydroxybenzaldehyde derivative. Its synthesis by Vielsmeyer-Haack reaction and confirmation of the product formation by 1H NMR has been reported. Its structure has been investigated.The sodium salt of 4-hydroxy-2,6-dimethoxybenzaldehyde may be used to derivatize Merrifield resin to form resin-bound aldehyde. 2,6-Dimethoxy-4-hydroxybenzaldehyde (4-hydroxy-2,6-dimethoxybenzaldehyde) may be used as a test compound to investigate the bactericidal activity of benzaldehydes against Campylobacter jejuni, Escherichia coli, Listeria monocytogenes and Salmonella enterica.