Cordran Tape (Flurandrenolide Tape, USP) is a transparent, inconspicuous, plastic surgical tape, impervious to moisture. It contains Cordran (Flurandrenolide, USP), a potent corticosteroid for topical use. Flurandrenolide occurs as white to off-white, fluffy crystalline powder and is odorless. Flurandrenolide is practically insoluble in water and in ether. One g dissolves in 72 mL of alcohol and in 10 mL of chloroform. The molecular weight of flurandrenolide is 436.52.

The chemical name of flurandrenolide is Pregn-4-ene-3,20-dione, 6-fluoro-11,21 dihydroxy-16,17-[(l-methylethylidene) bis (oxy)]-, (6a, 11b, 16a)-; its empirical formula is C₂₄H₃₃FO₆ . The structual formula is as follows:

Each square centimeter contains 4 mg (0.00916 mmol) flurandrenolide uniformly distributed in the adhesive layer. The tape is made of a thin, matte-finish polyethylene film that is slightly elastic and highly flexible.

The adhesive is a synthetic copolymer of acrylate ester and acrylic acid that is free from substances of plant origin. The pressure-sensitive adhesive surface is covered with a protective paper liner to permit handling and trimming before application.

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