pharmaceutical secondary standard; traceable to USP
Synonym(s): Cytosine; 4-Amino-2-hydroxypyrimidine; 4-Aminopyrimidin-2-(1H)-one
Empirical Formula: C4H5N3O
Formula Weight: 111.10
Linear Formula: C4H5N3O
MDL Number: MFCD00006034
Melting Point: >300 °C(lit.)
Beilstein Registry Number: 2637
Signal Word: Warning
Hazard statements: H315-H319-H335
Precautionary statements: P261-P305 + P351 + P338
Hazard Codes (Europe) : Xi
Risk Statements (Europe): 36/37/38
Safety Statements (Europe): 26
WGK Germany: 1