UNSPSC 51171638: Methylnaltrexone

This classification denotes an opiate antagonist with the moleculat formula C21H26NO4, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 0RK7M7IABE. European Medicines Agency schedules Methylnaltrexone in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB33963. The term METHYLNALTREXONE is a European Medicines Agency European Public Assessment Report System designation. As of Q4 2014, METHYLNALTREXONE remains the US FDA Preferred Term for this commodity.

Methylnaltrexone bears US NLM identifiers UMLS ID C0066411 and NCI Concept Code C48403. SMILES: C[N+]1(CCC23C4C(=O)CCC2(C1CC5=C3C(=C(C=C5)O)O4)O)CC6CC6.

UNSPSC 51171638 Methylnaltrexone is a Commodity code that shows minimal alignment with recent state and local procurement activity. The single recent opportunity posted under this code — Collin County Community Supervision and Corrections Department RFP 2026-327 for offender specimen collection and drug testing services — concerns laboratory testing infrastructure, staffing, and specimen handling rather than procurement or administration of methylnaltrexone as a pharmaceutical product. The scope includes immunoassay screening, LC/MS/MS and GC/MS confirmation testing, oral fluid and hair testing methodologies, and Interactive Voice Response notification systems for randomized testing, all supporting approximately 25,031 annual tests across five-panel and six-panel drug screens. The mismatch between the code's nominal scope (a specific opioid antagonist medication) and the actual work being solicited suggests either a data-entry error in opportunity tagging or minimal recent state and local demand for methylnaltrexone procurement under this code.

Collin County, Texas, is the sole recent issuing body on record for this code. The RFP, posted September 25, 2026, with responses due July 23, 2026, carries an estimated contract value of $600,000 over a two-year initial term with three optional one-year renewals, funded through Texas Department of Criminal Justice-Community Justice Assistance Division appropriations. Vendor evaluation emphasizes compliance, firm qualifications (25 points), client references (15 points), and cost (30 points), with optional demonstrations and interviews available for up to 30 additional points. Lab certification from SAMHSA, Texas DPS, or CAP is mandatory. Pricing is per-test with three service models — screening only, confirmation after screening, and screening with automatic confirmation of positives — and must include all freight, delivery, insurance, and staffing with no additional surcharges. No other recent opportunities under this code appear in the source material.