UNSPSC 51272706: Methionine enkephalin

This classification denotes a dietary amino acid with the molecular formula C27H35N5O7S, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 9JEZ9OD3AS, chemically known as enkephalin-(5-l-methionine), but more generally known as methionine enkephalin, which bears US NIH Compound Identifier 42785. European Medicines Agency schedules methionine enkephalin or its base in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB08850MIG.

Most nations, for tariff purposes, schedule methionine enkephalin under HS 29304010. SMILES: CSCC[C@@H](C(=O)O)NC(=O)[C@H](CC1CCCCC1)NC(=O)CNC(=O)CNC(=O)[C@H](CC2CCC(CC2)O)N.

UNSPSC 51272706 Methionine enkephalin, a Commodity code, shows minimal alignment with recent state and local procurement activity. The three opportunities posted under this code in the past year involve naloxone and safe drug deactivation systems, a direct-to-manufacturer pharmacy initiative, and generic multi-source pharmaceuticals and OTC products—none of which match the scope of methionine enkephalin, a synthetic opioid peptide used primarily in research, diagnostic, and specialized pharmaceutical applications rather than community health procurement or pharmacy benefit management. The mismatch suggests either incorrect code tagging in source systems or a code that does not reflect current state and local buying activity.

The single opportunity with concrete procurement language is Seminole County, Florida's IFB 60459723LAS, posted June 30, 2026, with a response deadline of July 26, 2023, seeking 1,900 units of naloxone and 800 safe drug deactivation systems annually through quarterly deliveries to the county's community health building. The Texas Health and Human Services Commission issued a Request for Information on April 3, 2026, to explore direct-to-manufacturer prescription programs outside traditional pharmacy benefit manager channels, and the Minnesota Multistate Cooperative Purchasing Alliance (MMCAP), administered by the Minnesota Department of Administration, issued an RFP in January 2026 for generic multi-source pharmaceuticals and OTC products across participating state and local facilities in Minnesota and Oregon, with proposals due March 26, 2026, and contract effectiveness July 1, 2026. Given the code's current content, methionine enkephalin does not represent an active state and local procurement category; state buyers appear to source this commodity outside standard UNSPSC taxonomy or the code is not regularly applied in practice.