SPL Set ID: 9515f95c-e29b-3c7f-0bdd-cda783988a72
1 drug(s) with this SPL Set ID
Timolol maleate ophthalmic gel forming solution is a non-selective beta adrenergic receptor blocking agent. Its chemical name is (-)-1-(tert-butylamino)-3-[(4 morpholino-1,2,5-thiadiazol-3-yl)oxy]-2-propanol maleate (1:1) (salt). Timolol maleate possesses an asymmetric carbon atom in its structure and is provided as the levo-isomer. The optical rotation of timolol maleate is: 25° [α] in 1.0N HCl (C = 5%) = -12.2° (-11.7° to -12.5°). 405 nm Its molecular formula is C 13 H 24 N 4 O 3 S•C 4 H 4 O 4 and its structural formula is: Timolol maleate, USP has a molecular weight of 432.49. It is a white to practically white powder, which is soluble in water, methanol, and ethanol. Timolol maleate ophthalmic gel forming solution is supplied as a sterile, isotonic, buffered, aqueous solution of timolol maleate in two dosage strengths. The pH of the solution is 6.5 to 7.5, and the osmolality is 260-330 mOsmol/kg. Each mL of timolol maleate ophthalmic gel forming solution 0.25% contains 2.5 mg of timolol (3.4 mg of timolol maleate USP). Each mL of timolol maleate ophthalmic gel forming solution 0.5% contains 5 mg of timolol (6.8 mg of timolol maleate USP). Inactive ingredients: gellan gum, tromethamine, mannitol and water for injection. Preservative: benzododecinium bromide 0.012%. The gel forming solution contains a purified anionic heteropolysaccharide derived from gellan gum. An aqueous solution of gellan gum, in the presence of a cation, has the ability to gel. Upon contact with the precorneal tear film, timolol maleate ophthalmic gel forming solution forms a gel that is subsequently removed by the flow of tears.