Section 06 Products of the chemical or allied 29 Organic chemicals 29 36 Provitamins and vitamins, natural or reproduced by synthesis (including natural concentrates), derivatives thereof used primarily as vitamins, and intermixtures of the foregoing, whether or not in any solvent 29 36 23 - - Vitamin B2 and its derivatives Commodity Code Description 29 36 23 00 - - Vitamin B2 and its derivatives