Melting point :240-243 °C (dec.) (lit.)
Density :1.7513 (rough estimate)
refractive index :1.6520 (estimate)
storage temp. :Keep in dark place,Sealed in dry,Room Temperature
solubility :Soluble in formic acid (50 mg/ml).
form :Solid
pka :7.34±0.10(Predicted)
color :White to yellow
BRN :127286
InChI :InChI=1S/C4H4BrN3O/c5-2-1-7-4(9)8-3(2)6/h1H,(H3,6,7,8,9)
InChIKey :QFVKLKDEXOWFSL-UHFFFAOYSA-N
SMILES :C1(=O)NC(N)=C(Br)C=N1
NIST Chemistry Reference :5-Bromocytosine(2240-25-7)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.