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 that nominally names a specific pharmaceutical compound, but state and local opportunities recently posted under this code are not soliciting isoniazid methanesulfonate itself. Instead, the recent activity shows procurement of broader medical and pharmaceutical products — naloxone, generic pharmaceuticals, over-the-counter products, and medical first-aid supplies for emergency response and health agency use. The code appears to serve as a catch-all category for pharmaceutical and medical supply procurement rather than a narrowly targeted single-substance code. State and local buyers using this code include county health agencies (Seminole County, Florida), state health and human services commissions (Texas Health and Human Services Commission), cities and municipal fire departments (City of Tampa), and cooperative purchasing alliances spanning multiple states (Minnesota Multistate Cooperative Purchasing Alliance). The scope of work ranges from emergency medical supplies for fire rescue operations to generic and OTC pharmaceutical distribution through authorized wholesalers to direct-to-manufacturer prescription fulfillment strategies.

The code sees activity across Florida, Texas, Minnesota, and participating cooperative-purchasing members. Recent representative solicitations include Seminole County's IFB 60459723LAS (posted June 30, 2026; due July 26, 2023) for 1,900 units of naloxone and 800 safe drug deactivation systems annually; the City of Tampa's IFB 26P00145 (posted March 25, 2026; due March 13, 2026) for 169 line items of medical and first-aid supplies for the Fire Department Rescue Division with an estimated contract amount of $700,000.00 and a sheltered-market designation for certified Small Local Business Enterprises offering a 5 percent bid discount; the Minnesota Multistate Cooperative Purchasing Alliance's RFP S1070000015802 (posted January 20, 2026; due March 26, 2026) for generic multi-source pharmaceuticals and OTC products through authorized wholesalers with a two-year term; and the Texas Health and Human Services Commission's RFI HHS0017013 (posted April 3, 2026; due April 3, 2026) exploring direct-to-manufacturer pharmacy benefit capabilities. The Tampa and Minnesota procurements are firm opportunities with established deadlines and award structures; the Texas RFI is exploratory market research preceding formal solicitation.