Ropidoxuridine (IPdR) is a novel, orally available halogenated thymidine analogue that holds promise as a sensitizer for human tumors.

Fludrocortisone is a synthetic corticosteroid with moderate glucocorticoid potency and much greater mineralocorticoid potency.

Creatinine is a break-down product of creatine phosphate in muscle, and is usually produced at a fairly constant rate by the body.