The draft resolution, which seeks to impose further sanctions on Iran over its failure to suspend uranium enrichment, has been prepared by the Iran-Six, comprising Germany and the five permanent Security Council members - the United States, Britain, France, Russia and China.
The document says all the companies facing possible sanctions - the Ammunition and Metallurgy industrial group, the Karaj nuclear research center near Tehran, and the Sepah bank - were associated with Iran's nuclear research program or ballistic missile development.
Iran resumed nuclear research last January, arousing concerns in the West, which suspects the Islamic Republic of pursuing a covert weapons program. Iran says it needs nuclear technologies to generate energy.
The UN could also apply sanctions against 15 individuals, including eight top managers of state companies and seven key figures in the Islamic Revolutionary Guards Corps, which is also responsible for Iran's missile forces.
The draft resolution says all financial assets of the companies and individuals must be frozen.
The document also provides for an embargo on weapons supplies from Iran and urges all countries to stop arms exports to the country. The draft resolution bans new grants, financial aid or loans to the Iranian government, except humanitarian programs.
The draft document, which will be voted on in the UN Security Council next week, also gives Iran 60 days to meet the UN Security Council demands and abandon its nuclear program.
In December, the UN introduced sanctions against Iran, banning activities involving uranium enrichment, chemical reprocessing, heavy water-based projects, and the production of nuclear weapons delivery systems.
The Iranian president, Mahmoud Ahmadinejad, said UN resolutions against the Islamic Republic were not legitimate.
"Today, the enemies of the Iranian people are trying to use the UN Security Council as an instrument to hinder progress and development in Iran," Ahmadinejad said. "But for global states the Security Council does not represent legitimate power at present."
Russia's UN envoy, Vitaly Churkin, said after the draft resolution was submitted to the UN that the possible sanctions against Iran would have no impact on Russia's economic interests.
"The new sanctions do not affect our interests," Churkin said. "The proposed restrictions do not relate to the previously signed contracts and do not limit their funding, even if carried out through companies on the sanctions list."
He added that restrictions on weapons supplies to Iran were formulated in "a soft form of a recommendation."
Russia, which is building a $1-billion nuclear power plant in southern Iran, has consistently supported the Islamic Republic's right to nuclear power under the Nuclear Non-Proliferation Treaty (NPT), and has resisted the imposition of harsh sanctions.
