Cytosine

Cytosine (CAS 71-30-7), also abbreviated as Cyt, is a pyrimidine nucleobase used as a biochemical building block and reference standard across life science and specialty chemical applications. It serves as a key starting material in the synthesis of nucleosides, nucleotides, and pharmaceutical intermediates. In biotechnology and molecular biology, it is used in the production of nucleoside analogs.

Consistent purity is critical for downstream synthesis of antiviral or anticancer drug intermediates. Cosmetic formulators incorporate it into skin care preparations targeting hydration and cellular support. The material leverages its affinity for biological systems in various formulations. It also functions as a reference compound and reagent-grade material for analytical laboratories conducting nucleic acid research.

Specialty chemical manufacturers use it as a heterocyclic intermediate in the synthesis of agrochemical and pharmaceutical active ingredients. It is supplied as a white crystalline powder in various quantities. Packaging ranges from laboratory-scale to bulk industrial orders. Standard grades include reagent-grade and high-purity specifications meeting research and synthesis requirements for global manufacturers.

Certificates of analysis with HPLC purity data are typically provided for every batch. Material is available to meet pharmaceutical-grade sourcing criteria on request for regulated applications.