2.85 CONTROLLED SUBSTANCES-POSSESSION WITH INTENT TO DISTRIBUTE / 21 U.S.C. Sec. 841(a)(1) is a federal criminal offense that involves intentionally possessing a controlled substance with the intent to distribute it. This offense is regulated by Section 841 of Title 21 of the United States Code. Types of controlled substances covered under this law include marijuana, cocaine, heroin, methamphetamine, ecstasy, and hallucinogens. Penalties for this offense can range from fines to imprisonment.