2 4 dimethoxybenzaldehyde structure July 8, 2019 16 32 64 128 2 4-dimethoxybenzaldehyde 2 4-dimethylbenzaldehyde 2 5-dimethoxy-4-ethylbenzaldehyde 3 4-dimethoxybenzaldehyde 2 5-dimethoxy-4-methylbenzaldehyde
