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…

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