(2)The requirements of Article 12 of the United Nations Convention in respect of trade in drug precursors (i.e. substances frequently used in the illicit manufacture of narcotic drugs and psychotropic substances) have been implemented, as far as trade between the Community and third countries is concerned, by Council Regulation (EEC) No 3677/90 of 13 December 1990 laying down measures to be taken to discourage the diversion of certain substances to the illicit manufacture of narcotic drugs and psychotropic substances(5).