21 C.F.R. § 1310.14
The Administrator finds that the following drugs or groups of drugs are being diverted to obtain a listed chemical for use in the illicit production of a controlled substance and removes the drugs or groups of drugs from exemption under paragraph (1)(iv) of the definition of regulated transaction in § 1300.02 of this chapter pursuant to the criteria listed in § 1310.10 of this part:
[75 FR 38922, July 7, 2010, as amended at 77 FR 4237, Jan. 27, 2012]