Analysis of information sources in references of the Wikipedia article "List of United Nations organizations" in English language version.
The Organization is not a specialized agency of the United Nations (UN), but it will have a special relationship with it, to be organized based on an agreement between the two organizations. It could not be a specialized agency within the meaning of Articles 57 and 63 of the UN Charter, as these provisions presuppose that the functions of the agency fall within the powers of the UN Economic and Social Council, which is not the case with the OPCW. Its status will rather be comparable to that of the International Atomic Energy Agency (IAEA).
IAEA, for example, is not a UN specialized agency. It submits annual reports to the United Nations General Assembly and the United Nations Security Council, when necessary. If any questions arise that fall within the purview of the Security Council, the IAEA notifies the SC accordingly. The IAEA's special relationship with the U.N. and U.N. Security Council is also specified in an agreement between the IAEA and the U.N. in 1957. Under this agreement, the IAEA cooperates with the Security Council by furnishing it, at its request, with such information and assistance as may be required in the exercise of its responsibility for the maintenance or restoration of international peace and security. This agreement has since served as a model for UN agreements with nonproliferation organizations such as the OPCW and the CTBTO
The number of specialized agencies thus rose to fifteen.
There are 17 Specialized Agencies: ...
... IBRD, IFC and IDA are Specialized Agencies of the UN ...
The number of specialized agencies thus rose to fifteen.