E7-5391. Manufacturer of Controlled Substances; Notice of Application

Pursuant to § 1301.33(a) of Title 21 of the Code of Federal Regulations (CFR), this is notice that on December 7, 2006, Sigma Aldrich Research, Biochemicals, Inc., 1-3 Strathmore Road, Natick, Massachusetts 01760, made application by letter to the Drug Enforcement Administration (DEA) to be registered as a bulk manufacturer of the basic classes of controlled substances listed in schedule I:

Drug	Schedule
Psilocybin (7437)	I
5-Methoxy-N,N-diisopropyltryptamine (7439)	I

The company plans on manufacturing reference standards for research purposes only.

Any other such applicant and any person who is presently registered with DEA to manufacture such a substance may file comments or objections to the issuance of the proposed registration pursuant to 21 CFR 1301.33(a).

Any such written comments or objections being sent via regular mail should be addressed, in quintuplicate, to the Deputy Assistant Administrator, Office of Diversion Control, Drug Enforcement Administration, Washington, DC 20537, Attention: DEA Federal Register Representative/ODL; or any being sent via express mail should be sent to DEA Headquarters, Attention: DEA >Federal Register Representative/ODL, 2401 Jefferson-Davis Highway, Alexandria, Virginia 22301; and must be filed no later than May 22, 2007.

Dated: March 9, 2007.

Joseph T. Rannazzisi,

Deputy Assistant Administrator, Office of Diversion Control, Drug Enforcement Administration.