UNSPSC 51181605: Methimazole

Commodity

Code facts

NIGP codes
1

UNSPSC codes and definitions come from the UN Development Programme (managed by GS1 US), and state and local contract opportunities from the governments' procurement sites.

NIGP codes for 51181605

Definition

This classification denotes an antithyroid agent with the molecular formula C4H6N2S, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier 554Z48XN5E, chemically known as 1,3-dihydro-1-methyl-2h-imidazole-2-thione but generally known as methimazole, which bears US NIH Compound Identifier 1349907. European Medicines Agency schedules Thiamazole in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB10967MIG.

Read the full definition

The term THIAMAZOLE is an International Non-Proprietary Name or INN (see WHO INN reference publication, Volume 16, No. 3 1962, List 4). World Health Organization schedules methimazole in its Anatomical Therapeutic Chemical (ATC) Classification. As of Q4 2014, METHIMAZOLE remains the US FDA Preferred Term for this commodity. Methimazole bears US NLM identifiers UMLS ID C0025644 and NCI Concept Code C641. SMILES: S=C1N(CC[NH]1)C.

About UNSPSC 51181605

UNSPSC 51181605 Methimazole is a Commodity code representing thyroid-regulating pharmaceuticals supplied through state and local procurement networks to public health facilities, correctional systems, and institutional care settings. State and local governments procure methimazole primarily as part of broader multi-source generic pharmaceutical contracts that consolidate purchasing across multiple jurisdictions and therapeutic categories. The recent activity under this code shows purchasing concentrated within cooperative purchasing alliances and multi-state drug-sourcing initiatives rather than single-jurisdiction spot buys, with issuing bodies typically being state health departments and administering offices for cooperative purchasing vehicles serving member states and municipalities.

The Minnesota Multistate Cooperative Purchasing Alliance (MMCAP), administered by the Minnesota Department of Administration's Office of State Procurement, issued an RFP on January 20, 2026 (due March 26, 2026) to establish multiple contracts for generic multi-source pharmaceuticals and OTC products serving participating state and local government facilities across Minnesota, Oregon, and other member jurisdictions. Vendors must supply through three authorized wholesalers—AmerisourceBergen Drug Corporation (Cencora), Cardinal Health 110 and 112, and Morris & Dickson Co., LLC—and demonstrate cGMP certification, Drug Supply Chain Security Act (DSCSA) compliance, relationships with at least two of the three wholesalers with chargeback systems, and flexible pricing options including flat price, net price formats (NF30, NF60, NF90), or WAC-minus structures. The contract term runs two years for new respondents with optional extensions, or through June 30, 2028 for incumbents, with evaluation weighted heavily toward price competitiveness (75 percent) and administrative compliance (20 percent combined), and vendors must maintain commercial general liability insurance of $5 million per occurrence and pay a 3 percent administrative fee on all contract purchases.

Quick answers

What is UNSPSC 51181605?

UNSPSC 51181605 is Methimazole, a commodity in UNSPSC 51000000, Pharmaceutical Products incl. Contraceptives and Vaccines.

Which NIGP codes match UNSPSC 51181605?

UNSPSC 51181605 maps to 1 NIGP code, 26968 Hormones and Synthetic Substitutes.

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