UNSPSC 51442602: Phenolsulfonphthalein

This classification denotes a diagnostic reagent with the molecular formula C19H14O5S, a preparation that US FDA regulates as an active ingredient or moiety under Unique Ingredient Identifier I6G9Y0J1OJ, chemically known as 4,4-(3h-2,1-benzoxathiol-3-ylidene)diphenol s,s-dioxide but more generally known as phenolsulfonphthalein, which bears US NIH Compound Identifier 4766. The European Medicines Agency schedules Phenolsulfonphthalein in its eXtended EudraVigilance Medicinal Product Dictionary or XEVMPD under Index SUB14835MIG.

The World Health Organization schedules phenolsulfonphthalein in its Anatomical Therapeutic Chemical (ATC) Classification.

UNSPSC 51442602 Phenolsulfonphthalein is a Commodity code that shows minimal alignment between its nominal scope and recent state and local procurement activity. The four recent opportunities tagged under this code cover radiologic equipment installation, X-ray machine warranty services, X-ray inspection system maintenance, and copper sulfate supply — none of which relates to phenolsulfonphthalein, a chemical reagent used in pH testing and medical diagnostics. The mismatch suggests either systematic miscoding in the issuing bodies' procurement systems or that this code is not actively used to tag relevant purchasing activity. State and local governments do not appear to be soliciting phenolsulfonphthalein itself under this code at present.

The tagged opportunities span multiple issuing bodies and geographies but offer no signal about phenolsulfonphthalein demand. Maricopa County (Arizona) posted IFB 362910 on October 1, 2026, for radiologic equipment and installation at three colleges, with responses due October 22, 2026. Escambia County Correction (Florida) issued a sole-source solicitation (SSCORALM2526005) on August 12, 2026, for an extended warranty on X-ray machines, closing August 19, 2026. Broward County Aviation Department (Florida) released an RFI on June 25, 2026, through July 28, 2026, to challenge a proposed sole-source designation for Rapiscan X-ray inspection system maintenance services. Pasco County, Florida posted RFQ FP261004 on June 3, 2026, for as-needed copper sulfate supply, due June 26, 2026. This code exhibits no recent activity related to its stated commodity and carries no procurement signal for phenolsulfonphthalein vendors.