The present invention describes a photodynamic prodrug i.e. a substituted 4 thiothymidine (4 TT) which is able to cross the body s epithelia tissues such as the skin oral cavity nasal cavity pulmonary tract digestive tract and blood brain barrier including the use of such a prodrug in a topical application for the t...

The present invention describes methods of treating cellulosic materials with a composition that provides increased hydrophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for esterification of available hydroxyl groups on cellulosic materials where such hy...