UNSPSC 51203403: Mercaptopurine

This classification denotes a purine antagonist and immunosuppressant with the molecular formula C5H4N4S.H2O, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier (SRS UNII) E7WED276I5, chemically known as 1,7-dihydro-6h-purine-6-thione but more generally known as 6-mercaptopurine monohydrate, which bears US NIH Compound Identifier 667490. European Medicines Agency schedules Mercaptopurine in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB12149MIG.

UNSPSC 51203403 Mercaptopurine is a Commodity code for a specific chemotherapy pharmaceutical. Recent state and local procurement activity shows little alignment with this code's nominal scope — the two most recent opportunities tagged to it name naloxone (an opioid antagonist), ciprofloxacin (an antibiotic), and doxycycline (an antibiotic), none of which are mercaptopurine or related antimetabolite agents. The Illinois Department of Public Health awarded a $2,999,999.11 pharmaceutical warehouse piggyback contract through the MMCAP Infuse cooperative to Chartwell Rx LLC on August 28, 2026, for ciprofloxacin and doxycycline supply under an IFB; Seminole County, Florida issued an IFB in June 2026 for naloxone and drug deactivation systems with quarterly deliveries to its Community Health Building. Neither solicitation reflects active demand for mercaptopurine itself, suggesting the code may be mis-tagged in the state and local procurement databases or that mercaptopurine procurement occurs through different vendor relationships or cooperative vehicles not captured in the recent-opportunity set.

The geographic spread of the two recorded opportunities spans Illinois and Florida, both through their respective health or county agencies. No other recent state or local mercaptopurine solicitations appear in the source. Practitioners evaluating this code should verify whether mercaptopurine procurement in their target markets flows through specialized oncology suppliers, group purchasing organizations (GPOs), or piggyback arrangements under broader pharmaceutical umbrellas, as the UNSPSC taxonomy tag does not currently reflect active, direct state or local solicitation for the drug itself.