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Harmonized System
Section VI > Chapter 29 > Heading 2937 > 2937.50
Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues
Section VI > Chapter 29 > Heading 2938
Glycosides, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives.
Section VI > Chapter 29 > Heading 2938 > 2938.10
Rutoside (rutin) and its derivatives
Section VI > Chapter 29 > Heading 2939
Alkaloids, natural or reproduced by synthesis, and their salts, ethers, esters and other derivatives.
Section VI > Chapter 29 > Heading 2939 > 2939.1
Alkaloids of opium and their derivatives; salts thereof
Section VI > Chapter 29 > Heading 2939 > 2939.4
Alkaloids of ephedra and their derivatives; salts thereof
Section VI > Chapter 29 > Heading 2939 > 2939.5
Theophylline and aminophylline (theophylline-ethylenediamine) and their derivatives; salts thereof
Section VI > Chapter 29 > Heading 2939 > 2939.6
Alkaloids of rye ergot and their derivatives; salts thereof