UNSPSC 51201828: Levamisole phosphate

This classification denotes a biological response modifier and antihelminthic agent with the molecular formula C11H12N2S.H3O4P, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier FIG89N8AZY, chemically known as (s)-2,3,5,6-tetrahydro-6-phenylimidazo(2,1-b)thiazoletriylium phosphate but more generally known as levamisole phosphate, which bears US NIH Compound Identifier 198119. Most nations, for tariff and trade purposes, schedule levamisole phosphate under HS 29349990.

As of Q4 2014, LEVAMISOLE PHOSPHATE remains US FDA's Preferred Term for this commodity. Levamisole phosphate bears US NLM identifiers UMLS ID C0309393 and NCI Concept Code C77331. SMILES: C1CCC(CC1)[C@H]2CN3CCSC3=N2.OP(=O)(O)O.

UNSPSC 51201828 Levamisole phosphate is a Commodity code that in recent state and local activity captures vaccine procurement, not the narrow pharmaceutical active ingredient its name suggests. The Mississippi State Department of Health posted a sole source notice in July 2026 for Yellow Fever Vaccine from Sanofi Pasteur, indicating that state health agencies use this code to flag immunization products and biologics when they route buys through procurement systems. The work involves securing vaccines for public health programs, which state departments of health acquire either through competitive bid or, when justified, sole source justification to a specific manufacturer when clinical or supply constraints require it.

State health departments appear to be the primary issuing body for opportunities under this code. The sole activity visible in recent filings is the Mississippi State Department of Health's July 2026 notice for Yellow Fever Vaccine, due August 3, 2026, structured as a proposed sole source procurement with a formal objection period. The notice required any challenger to submit written objection with supporting documentation of alternative vendor capability to Cynthia Brasher at Cynthia.brasher@msdh.ms.gov. The notice did not disclose quantity, contract term, or estimated value. If no substantiated objections demonstrating alternative sources were filed by the deadline, the department would proceed with the sole source award; if objections were received and sustained, the department stated it would conduct a competitive bid or selection process, with appeal rights available through the state Public Procurement Review Board.