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ARTICLE 2: SUBSTANCES UNDER CONTROL
1. Except as to measures of control which are limited to specified drugs, the drugs in Schedule I are subject to all measures of control applicable to drugs under this Convention and in particular to those prescribed in article 4 (c), 19, 20, 21, 29, 30, 31, 32, 33, 34 and 37.
2. The drugs in Schedule II are subject to the same measures of control as drugs in Schedule I with the exception of the measures prescribed in article 30, paragraphs 2 and 5, in respect of the retail trade.
3. Preparations other than those in Schedule III are subject to the same measures of control as the drugs which they contain, but estimates (article 19) and statistics (article 20) distinct from those dealing with these drugs shall not be required in the case of such preparations, and article 29, paragraph 2 (c) and article 30, paragraph 1 (b) (ii) need not apply.
4. Preparations in Schedule III are subject to the same measures of control as preparations containing drugs in Schedule II except that article 31, paragraphs 1 (b) and 3 to 15 and, as regards their acquisition and retail distribution, article 34, paragraph (b), need not apply, and that for the purpose of estimates (article 19) and statistics (article 20) the information required shall be restricted to the quantities of drugs used in the manufacture of such preparations.
5. The drugs in Schedule IV shall also be included in Schedule I and subject to all measures of control applicable to drugs in the latter Schedule, and in addition thereto:
(a) A Party shall adopt any special measures of control which in its opinion are necessary having regard to the particularly dangerous properties of a drug so included; and
(b) A Party shall, if in its opinion the prevailing conditions in its country render it the most appropriate means of protecting the public health and welfare, prohibit the production, manufacture, export and import of, trade in, possession or use of any such drug except for amounts which may be necessary for medical and scientific research only, including clinical trials therewith to be conducted under or subject to the direct supervision and control of the Party.
6. In addition to the measures of control applicable to all drugs in Schedule I, opium is subject to the provisions of article 19, paragraph 1, subparagraph (f), and of articles 21bis, 23 and 24, the coca leaf to those of articles 26 and 27 and cannabis to those of article 28.
7. The opium poppy, the coca bush, the cannabis plant, poppy straw and cannabis leaves are subject to the control measures prescribed in article 19, paragraph 1, subparagraph (e), article 20, paragraph 1, subparagraph (g), article 21bis and in articles 22 to 24; 22, 26 and 27; 22 and 28; 25; and 28, respectively.
8. The Parties shall use their best endeavours to apply to substances which do not fall under this Convention, but which may be used in the illicit manufacture of drugs, such measures of supervision as may be practicable.
9. Parties are not required to apply the provisions of this Convention to drugs which are commonly used in industry for other than medical or scientific purposes, provided that:
(a) They ensure by appropriate methods of denaturing or by other means that the drugs so used are not liable to be abused or have ill effects (article 3, paragraph 3) and that the harmful substances cannot in practice be recovered; and
(b) They include in the statistical information (article 20) furnished by them the amount of each drug so used.