The compound under consideration is Cytosine, 5 G, Glass, a nucleobase and derivative within the category of DNA synthesis. Its molecular formula is C4H5N3O with a molecular weight of 111.10 g/mol and an exact mass of 111.043261792. This organic and bioorganic chemical has a Melting Point above 300 °C and carries a Warning signal word according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), indicating potential hazards. It is identified by the InChI key OPTASPLRGRRNAP-UHFFFAOYSA-N and its SMILES notation is C1=C(NC(=O)N=C1)N.

• CAS Number: 71-30-7
• Molecular Formula: C4H5N3O
• Molecular Weight: 111.10
• Exact Mass: 111.043261792
• Melting Point: > 300 °C
• GHS Signal Word: Warning
• Hazard Statements:
• H315 (86.4%): Causes skin irritation [Warning Skin corrosion/irritation]