Hydroxymethoxybenzaldehyde may refer to:
2-Hydroxy-4-methoxybenzaldehyde 2-Hydroxy-5-methoxybenzaldehyde Vanillin (4-Hydroxy-3-methoxybenzaldehyde) o-Vanillin (2-Hydroxy-3-methoxybenzaldehyde) Isovanillin (3-Hydroxy-4-methoxybenzaldehyde)
See also C8H8O3