Kerlone (betaxolol hydrochloride) is a b₁-selective (cardioselective) adrenergic receptor blocking agent available as 10-mg and 20-mg tablets for oral administration. Kerlone is chemically described as 2-propanol, 1-[ 4-[2-(cyclopropylmethoxy) ethyl] phenoxy]-3-[(1-methylethyl) amino]-, hydrochloride, (±).

Betaxolol hydrochloride is a water-soluble white crystalline powder with a molecular formula of C₁₈H₂₉NO₃-HCl and a molecular weight of 343.9. It is freely soluble in water, ethanol, chloroform, and methanol, and has a pKa of 9.4.

The inactive ingredients are hydroxypropyl methylcellulose, lactose, magnesium stearate, polyethylene glycol 400, microcrystalline cellulose, colloidal silicon dioxide, sodium starch glycolate, and titanium dioxide.

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