UNSPSC 51191936: Thiamine disulfide

This classification denotes a b vitamin C24H34N8O4S2, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier UJV8K21YKL, chemically known as n,n'-(dithiobis(2-(2-hydroxyethyl)-1-methyl-2,1-ethenediyl))bis(n-((4-amino-2-methyl-5-pyrimidinyl)methyl)formamide), but more generally known as thiamine disulfide, which bears US NIH Compound Identifier 5432. European Medicines Agency schedules Thiamine disulfide in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB04797MIG.

Most nations, for tariff and trade purposes, schedule thiamine disulfide under HS 29362200 and SITC 54113. As of Q4 2014, THIAMINE DISULFIDE remains US FDA's Preferred Term for this commodity. SMILES: CC1NC(C(CN1)CN(/C(=C(\SS/C(=C(\N(C=O)CC2C(NC(NC2)C)N)/C)/CCO)/CCO)/C)C=O)N.

UNSPSC 51191936 Thiamine disulfide, a Commodity code, covers chemical supply products used in municipal water treatment and pharmaceutical manufacturing operations, though the recent solicitation activity under this code diverges significantly from the nominal commodity. The City of Meriden's July 2026 IFB for sodium bisulfite chemical supply at its Water Pollution Control Facility represents the closest match to traditional chemical commodity procurement under the code; however, the Minnesota Multistate Cooperative Purchasing Alliance (MMCAP) RFP for generic multi-source pharmaceuticals and over-the-counter products posted in January 2026 appears mistagged to this code and reflects pharmaceutical distribution rather than thiamine disulfide procurement. State and local issuing bodies using the code span municipal water utilities and cooperative purchasing alliances serving multiple state and local jurisdictions, though the sparse and misaligned activity suggests limited relevant volume under the nominal code scope.

Activity under this code is concentrated in the upper Midwest and Northeast, with Connecticut and Minnesota showing recent postings. The City of Meriden's solicitation B027-15 (due July 29, 2026) seeks sodium bisulfite with firm pricing evaluated on a unit-cost basis, requiring bidders to carry $1 million to $2 million General Liability coverage and performance and payment bonds. The MMCAP RFP (due March 26, 2026, now closed) sought pharmaceutical manufacturers to supply through three authorized wholesalers with pricing effective July 1, 2026 and a two-year initial term; however, this opportunity is substantively disconnected from thiamine disulfide procurement. The code shows minimal confirmed recent activity aligned to its stated commodity definition, and bidders should verify code assignment before pursuing opportunities tagged under it.