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Harmonized System
Section VI > Chapter 29 > Heading 2912 > 2912.2
Cyclic aldehydes without other oxygen function
Section VI > Chapter 29 > Heading 2912 > 2912.4
Aldehyde-alcohols, aldehyde-ethers, aldehyde-phenols and aldehydes with other oxygen function
Section VI > Chapter 29 > Heading 2912 > 2912.1 > 2912.11
Methanal (formaldehyde)
Section VI > Chapter 29 > Heading 2912 > 2912.1 > 2912.12
Ethanal (acetaldehyde)
Section VI > Chapter 29 > Heading 2912 > 2912.4 > 2912.41
Vanillin (4-hydroxy-3-methoxybenzaldehyde)
Section VI > Chapter 29 > Heading 2912 > 2912.4 > 2912.42
Ethylvanillin (3-ethoxy-4-hydroxybenzaldehyde)