Pemirolast potassium is a slightly yellow, water-soluble powder with a molecular weight of 266.3.
The chemical structure is presented below:
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C10H7KN6O
Chemical name
9-methyl-3-(1H-tetrazol-5-yl)-4H-pyrido[1,2-α] pyrimidin-4-one potassium
Each mL contains: ACTIVE: pemirolast potassium 1 mg (0.1%); PRESERVATIVE: lauralkonium chloride 0.005%; INACTIVES: glycerin, dibasic sodium phosphate, monobasic sodium phosphate, phosphoric acid and/or sodium hydroxide to adjust pH, and purified water. The osmolality of ALAMAST® oph-thalmic solution is approximately 240 mOsmol/kg.




