Latanoprost is a prostaglandin F2α analogue. Its chemical
name is isopropyl-(Z)-
7[(1R,2R,3R,5S)3,5-dihydroxy-2-[(3R)-3-hydroxy-5-phenylpentyl]cyclopentyl]-5-heptenoate.
Its molecular formula is C26H40O5
and its chemical structure is:
Latanoprost is a colorless to slightly yellow oil that is very soluble in acetonitrile
and freely soluble in acetone, ethanol, ethyl acetate, isopropanol, methanol and
octanol. It is practically insoluble in water.
XALATAN Sterile Ophthalmic Solution (latanoprost ophthalmic solution) is supplied
as a sterile, isotonic, buffered aqueous solution of latanoprost with a pH of approximately
6.7 and an osmolality of approximately 267 mOsmol/kg. Each mL of XALATAN contains
50 micrograms of latanoprost. Benzalkonium chloride, 0.02% is added as a preservative.
The inactive ingredients are: sodium chloride, sodium dihydrogen phosphate monohydrate,
disodium hydrogen phosphate anhydrous and water for injection. One drop contains
approximately 1.5 µg of latanoprost.