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Phloxine B is a fluorescein dye which is known to inhibit the enzyme UDP-glucuronosyltransferase (UGT), the main catalyst for the glucuronidation of 7-HC.Colour Index No (C. I. No) 45410
P 1725 (OTTO) Phloxin B Cas 18472-87-2 - used as an alternative to Gram staining, to differentiate between Gram-negative and Gram-positive bacteria.