uracil

n. derivative of pyrimidine that is a basic constituent of RNA and is used in biochemical research

Uracil is a pyrimidine which is common and naturally occurring. Uracil was originally discovered in 1900. It was isolated by hydrolysis of yeast nuclein that was found in bovine thymus and spleen, herring sperm, and wheat germ. Uracil is a planar, unsaturated compound that has the ability to absorb light
See more at Wikipedia.org...

Uracil /ura·cil/ a pyrimidine base, in animal cells usually occurring condensed with ribose to form the ribonucleoside uridine; the corresponding [more]Uracil - Community and Resources

Noun
1. a nitrogen-containing base found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine
(synonym) U
(hypernym) nucleotide
(substance-holonym) ribonucleic acid, RNA

An anticancer drug that belongs to the family of drugs called alkylating agents.