PROVITAMINS, VITAMINS AND HORMONES
GENERAL
This sub-Chapter covers active substances which constitute a group of compounds of fairly complex chemical composition, essential for the proper functioning and harmonious development of the animal and vegetable organism.
They have mainly a physiological action and are used in medicine or industry because of their individual characteristics.
2 HEADINGS
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.
29.37 - HORMONES, NATURAL OR REPRODUCED BY SYNTHESIS; DERIVATIVES THEREOF, USED PRIMARILY AS HORMONES; OTHER STEROIDS USED PRIMARILY AS HORMONES.