21 C.F.R. § 312.69 Handling of controlled substances.
Title 21 - Food and Drugs
If the investigational drug is subject to the Controlled Substances Act, the investigator shall take adequate precautions, including storage of the investigational drug in a securely locked, substantially constructed cabinet, or other securely locked, substantially constructed enclosure, access to which is limited, to prevent theft or diversion of the substance into illegal channels of distribution.
Title 21: Food and Drugs
PART 312—INVESTIGATIONAL NEW DRUG APPLICATION
Subpart D—Responsibilities of Sponsors and Investigators
§ 312.69 Handling of controlled substances.