It is one of the four main bases found in DNA and RNA, along with adenine, guanine, and thymine (uracil in RNA). It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached. The nucleoside of cytosine is cytidine. In Watson-Crick base pairing, it forms three…

Antineoplastic agent which acts as an antimetabolite and is widely used antileukemic agent that inhibits de novo purine synthesis through incorporation of thiopurine methyltransferase metabolites into DNA and RNA. Toxicity LD50: <364 mg/kg Appearance: White to light yellow crystal…

Ultra pure Grade Em (258 nm, 0.1M HCl): >11,100 Appearance: Solid Boiling Point: ~561.5 ¡ãC at 760 (Predicted) Density: ~2.2 g/cm3 (Predicted) Melting Point: >300 ¡ãC (lit.) RTECS Number: MF8260000