UNSPSC 51283920: Sulfamethoxypyridazine

This classification denotes a sulfonamide anti-infective agent with the molecular formula C11H12N4O3S, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier T034E4NS2Z, chemically known as sulfanilamide, n(sup 1)-(6-methoxy-3-pyridazinyl)- but generally known as sulfamethoxypyridazine, which bears US NIH Compound Identifier 5330. European Medicines Agency schedules Sulfamethoxypyridazine in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB10712MIG.

UNSPSC 51283920 Sulfamethoxypyridazine is a Commodity code that nominally names a specific veterinary antimicrobial agent, but recent state and local procurement activity under this code shows little direct alignment with that product. The Illinois Department of Public Health's August 2026 piggyback pharmaceutical warehouse contract through MMCAP Infuse awarded to Chartwell Rx LLC supplied Doxycycline Hyclate 100mg and Ciprofloxacin Hydrochloride 500mg tablets—neither of which is sulfamethoxypyridazine. Seminole County, Florida's June 2026 IFB for 1,900 units of Naloxone and 800 Safe Drug Deactivation Systems annually targets opioid-response and drug-disposal equipment, not the antimicrobial specified in the code name. This pattern suggests the code is being applied inconsistently or may serve as a catch-all Commodity tier designation for pharmaceutical and medical supply procurements that do not fit narrower categories.

The recent opportunities show state departments and county governments as the primary issuing bodies under this code. Geographic activity concentrates in Illinois and Florida based on the most recent filings. The Illinois Department of Public Health contract, totaling $2.99 million over three years with renewal options, represents a larger and more typical state pharmaceutical warehousing procurement; Seminole County's procurement is smaller in dollar scope but reflects quarterly delivery cycles common to public-health supply chains. Both procurements used competitive bidding (Invitation for Bid) with award criteria centered on lowest-cost responsiveness. Neither opportunity imposed business enterprise or veterans' business program set-asides. Response deadlines have already passed for both opportunities, making them historical records rather than open markets for new entrants.