# The Human Medicines Regulations 2012, Paragraph 12


For each active substance to be manufactured, imported, or distributed—
(a) the CAS registration number assigned to that active substance by the Chemical Abstracts Service, a division of the American Chemical Society;
(b) where applicable, the Anatomical Therapeutic Category code assigned to that active substance under the Anatomical Therapeutic Chemical Classification System used for the classification of drugs by the World Health Organisation’s Collaborating Centre for Drug Statistics Methodology;
(c) either—
(i) the International Union of Pure and Applied Chemistry nomenclature, or
(ii) the common name; and
(d) the intended quantities of each active substance to be manufactured, imported or distributed.

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Source: https://www.legislation.gov.uk/uksi/2012/1916/schedule/7A/paragraph/12 (the official version)
Page: https://openlegislation.uk/human-medicines-regulations-2012/schedule-7A/paragraph-12
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.