Abacavir the drug sulfate, a cyclically substituted purine analog, presents a unique molecular profile. Its empirical formula is C14H18N6O4·H2SO4, resulting in a molecular weight of 393.41 g/mol. The agent exists as a white to off-white powder and is ACTARIT 18699-02-0 practically insoluble in ethanol, slightly soluble in water, and freely soluble