The Single Convention on Narcotic Drugs, 1961 (as amended by the 1972 Protocol) is the main international drug control treaty. Replacing a number of previous conventions, it aims to limit the cultivation, production, manufacture and use of narcotic drugs to medical and scientific purposes, while ensuring their availability for such purposes. The convention lists a number of narcotic drugs, and outlines the responsibilities of parties with regard to the production, manufacture, distribution and use of these drugs in their countries. The INCB, which submits its reports to ECOSOC through the CND, is responsible for monitoring the compliance of governments with the provisions of this treaty. Methadone is listed in the Single Convention on Narcotic Drugs, 1961.