UNSPSC 51191555: Isosorbide mononitrate

This classification denotes a vasodilating agent with the molecular formula C6H9NO6, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier LX1OH63030, chemically known as 1,4:3,6-dianhydro-d-glucitol 5-nitrate but generally known as isosorbide mononitrate, which bears US NIH Compound Identifier 27661. European Medicines Agency schedules Isosorbide mononitrate in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB08336MIG.

UNSPSC 51191555 Isosorbide mononitrate is a Commodity code that identifies a specific pharmaceutical product — a nitrate vasodilator used in cardiac care — yet recent state and local procurement activity under this code does not reflect pharmaceutical purchases. Instead, the opportunities tagged to this code span water treatment chemicals (sodium bisulfite), valve assemblies and repair services for wastewater systems (DeZurik/APCO valves), and parenteral nutrition and intravenous solutions for correctional healthcare. This mismatch suggests the code is being applied to unrelated commodity acquisitions or that state and local procurement offices are using broad pharmaceutical or medical-supply taxonomy entries to capture diverse product categories. The actual work being solicited includes chemical supply for municipal water pollution control, wastewater treatment infrastructure and maintenance, and medical nutrition and IV products for incarcerated individuals in correctional facilities.

The issuing bodies span local water utilities, county purchasing offices, and state correctional agencies. Broward County, Florida issued a Request for Information (RFI) on September 18, 2026 seeking vendors qualified to supply DeZurik/APCO valves, parts, and repair services for wastewater compliance (response due September 29, 2026); the City of Meriden, Connecticut solicited bids for sodium bisulfite chemical supply on August 14, 2026 (due July 29, 2026); and the Washington State Department of Corrections issued an RFQ/RFQ on September 8, 2026 for parenteral products, services, and equipment across eight correctional facilities statewide (due October 7, 2026, with pre-bid September 23, 2026). The Washington DOC opportunity actively encourages small business (25%), minority-owned (10%), women-owned (6%), and veteran-owned (5%) participation and requires Subcontractor Inclusion Plans. Recent activity concentrates in Florida, Connecticut, and Washington state, with no clear geographic pattern. The code shows little decision-relevant recent activity aligned to isosorbide mononitrate; business development professionals should verify whether the code is misconfigured in state and local procurement systems or whether it serves as a catch-all taxonomy entry.