UNSPSC 51281515: Isoniazid methanesulfonate

This classification denotes an antitubercular agent with the molecular formula C7H9N3O4S, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier GN8S7ZES0F, chemically known as isonicotinic acid 2-(sulfomethyl)hydrazine, but more generally known as isoniazid methanesulfonate, which bears US NIH Compound Identifier 3769. European Medicines Agency schedules isoniazid methanesulfonate or its base in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB08326MIG.

Most nations, for tariff purposes, schedule isoniazid methanesulfonate under HS 29333999. SMILES: C1CNCCC1C(=O)NNCS(=O)(=O)O.

UNSPSC 51281515 Isoniazid methanesulfonate is a Commodity code covering a specific pharmaceutical active ingredient, but the recent state and local opportunities tagged under it do not reflect procurement of this substance. Instead, the code shows activity in broader pharmaceutical supply and drug management—the Illinois Department of Public Health's award to Chartwell Rx LLC for antibiotic tablet supplies (Doxycycline Hyclate 100mg and Ciprofloxacin Hydrochloride 500mg) through the MMCAP Infuse cooperative purchasing vehicle, and Seminole County, Florida's solicitation for Naloxone and Safe Drug Deactivation Systems. State and local health departments and counties are the primary issuing bodies under this code, procuring pharmaceuticals and medical countermeasures through both direct buys and piggyback contracts leveraging state or multistate cooperative agreements.

Illinois and Florida have shown recent procurement activity at this code level, with Illinois conducting an Invitation for Bid in August 2026 (award to Chartwell Rx LLC on a $2,999,999.11 three-year contract including renewals) and Seminole County, Florida releasing an IFB in June 2026 for annual supply of Naloxone and drug deactivation systems with quarterly deliveries to the county community health building. The mismatch between the code's nominal substance (Isoniazid methanesulfonate) and the actual pharmaceutical products being procured suggests either a tagging error or that this particular code designation is rarely used for its named ingredient in recent state and local contracting; buyers appear to categorize general pharmaceutical supply and emergency-response medical supplies under this taxonomy position rather than substance-specific codes.