2-(4-hydroxy-3-methoxyphenyl)acetaldehyde 2-(4-hydroxy-3-methoxy-phenyl)acetaldehyde 2-(4-hydroxy-3-methoxy-phenyl)ethanal 5703-24-2 C05581 homovanillin Ethanal, 2-(4-hydroxy-3-methoxyphenyl) Benzeneacetaldehyde, 4-hydroxy-3-methoxy- HMPAL (4-hydroxy-3-methoxyphenyl)acetaldehyde 4-hydroxy-3-methoxybenzeneacetaldehyde CHEBI:28111 3-Methoxy-4-hydroxyphenylacetaldehyde