1. 
   phenolsulfonphthalein
   <chemical> 4,4'-(3h-2,1-benzoxathiol-3-ylidene)bisphenol s,s-dioxide. Red dye, pH indicator, and diagnostic aid for determination of renal function. It is used also for studies of the gastrointestinal and other systems. ... Pharmacological action: indicators and reagents, phthalein dyes. ... C...
   Found op http://www.mondofacto.com/facts/dictionary?phenolsulfonphthalein
   
   
2. 
   phenolsulfonphthalein
   (PSP) Type: Term Pronunciation: fē′nol-sŭl′fōn-thal′ē-in, -thal′ēn Definitions: 1. An indicator in tissue culture media (yellow at pH 6.8, red at pH 8.4); occurs as a bright to dark red crystalline powder; in the past given by parenteral inject...
   Found op http://www.medilexicon.com/medicaldictionary.php?t=67890
   
   

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