Naphazoline EP Impurity C (CAS No: 132-75-2) or 1-Naphthylacetonitrile is an impurity present in Naphazoline which is a potent vasoconstrictor, which is usually combined with other drugs in ophthalmic decongestant solutions, used for the treatment of conjunctivitis and superficial keratitis.
References
LAHIRI, V. N. “Report on the Structure of Carbazole, C12H9N.†Zeitschrift Für Kristallographie – Crystalline Materials, vol. 127, no. 1-6, Dec. 1968, pp. 456–59, https://doi.org/10.1524/zkri.1968.127.16.456.?“Simultaneous Determination of Naphazoline Nitrate and Tetramethylthionine Base in Eye Drops by First-Derivative UV Spectrophotometry.†Taylor & Francis, 2021, www.tandfonline.com/doi/abs/10.1080/00032719908542826.?
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