Description
Hydrocortisone and Acetic Acid Otic Solution, USP is a solution containing hydrocortisone (1%) and acetic acid (2%), in a propylene glycol vehicle containing propylene glycol diacetate (3%), benzethonium chloride (0.02%), sodium acetate (0.015%) and citric acid (0.05%). The empirical formulas for acetic acid and hydrocortisone are CH3COOH, and C21H30O5, with a molecular weight of 60.05 and 362.46, respectively. The structural formulas are:
Hydrocortisone and Acetic Acid is available as a nonaqueous otic solution buffered at pH 3 for use in the external ear canal.