21 C.F.R. § 1308.47
Pursuant to section 201(e) of the Act (21 U.S.C. 811(e) ), the Administrator may, without regard to the findings required by subsection 201(a) or 202 (b) of the Act (21 U.S.C. 811(a) or 812(b) ) and without regard to the procedures prescribed by § 1308.41 or subsections 201 (a) and (b) of the Act (21 U.S.C. 811(a) and (b) ), issue and publish in the FEDERAL REGISTER an order controlling an immediate precursor. The order shall designate the schedule in which the immediate precursor is to be placed, which shall be the same schedule in which the controlled substance of which it is an immediate precursor is placed or any other schedule with a higher numerical designation. An order controlling an immediate precursor shall become effective 30 days from the date of publication in the FEDERAL REGISTER, unless the Administrator finds that conditions of public health or safety necessitate an earlier effective date, in which event the Administrator shall specify in the order his findings as to such conditions.
21 C.F.R. §1308.47