UNSPSC 51171646: Alvimopan anhydrous

This classification denotes the anhydrous form of an opiate antagonist with the molecular formula C25H32N2O4.2H2O, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 677C126AET, chemically known as glycine, n-((2s)-2-(((3r,4r)-4-(3-hydroxyphenyl)-3,4-dimethyl-1-piperidinyl)methyl)-1-oxo-3-phenylpropyl)-, dihydrate but more generally known as alvimopan, which bears US NIH Compound Identifier 5488547. Alvimopan most often comes in simple, anhydrous, and hyrdate forms.

UNSPSC 51171646 Alvimopan anhydrous is a Commodity code that does not align with the recent state and local procurement activity available in the source. Collin County Community Supervision and Corrections Department's RFP 2026-327 for offender specimen collection and drug testing services—the sole recent opportunity tagged to this code—solicits laboratory testing services, chain-of-custody specimen handling, and immunoassay screening with confirmatory testing methodologies, not pharmaceutical procurement. The mismatch suggests either a coding error in the opportunity posting or that alvimopan anhydrous, a peripheral-acting opioid antagonist used clinically to reverse postoperative ileus, is not a commodity state and local procurement offices are actively buying through formal solicitations under their standard classification systems.

No additional recent opportunities under this code appear in the source. Without a portfolio of active solicitations to characterize issuing-body frequency, geographic spread, or current market activity, the code does not present a decision-relevant procurement signal at this time.