UNSPSC 51361603: Tryptophan

This classification denotes a dietary amino acid with the molecular formula C11H12N2O2, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 8DUH1N11BX, chemically known as 1h-indole-3-propanoic acid, a-amino-, (s)- but generally known as l-tryptophan, which bears US NIH Compound Identifier 1148. European Medicines Agency schedules Tryptophan in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB12377MIG.

UNSPSC 51361603 Tryptophan is a Commodity code that does not align with the state and local procurement activity currently tagged under it. The recent opportunities posted under this code involve naloxone procurement, therapeutic pharmacy initiatives, and multi-source generic pharmaceuticals and OTC products—none of which are tryptophan or amino acid supplements. The source shows a clear mismatch between the code's nominal scope and actual solicitation content, suggesting either a tagging error in the state and local procurement systems or that tryptophan itself sees minimal direct purchasing activity through public bidding.

The three recent opportunities attributed to this code span health and human services purchasing by Seminole County, Florida; the Texas Health and Human Services Commission; and the Minnesota Multistate Cooperative Purchasing Alliance (MMCAP) administered by the Minnesota Department of Administration. Seminole County issued an IFB on June 30, 2026, for naloxone and drug deactivation systems with a July 26, 2023 response deadline. Texas HHS posted an RFI on April 3, 2026, to gather vendor input on direct-to-manufacturer prescription programs. MMCAP issued an RFP on January 20, 2026, with a March 26, 2026 response deadline for generic multi-source pharmaceuticals and OTC products to be distributed across state and local facilities in Minnesota and Oregon. Given the absence of relevant tryptophan-specific solicitations in the recent record, this code merits watchful monitoring rather than active pursuit unless the underlying taxonomy is corrected or direct amino acid procurement emerges as a documented state and local line item.