| Identification | ||
| Name | Cytosine | |
| Synonyms | 4-Amino-2(1H)-pyrimidinone; 2-Oxy-4-amino pyrimidine | |
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| Molecular Structure |
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| Molecular Formula | C4H5N3O | |
| Molecular Weight | 111.10 | |
| CAS Registry Number | 71-30-7 | |
| EINECS | 200-749-5 | |
| Properties | ||
| Melting point | 300 ºC | |
| Water solubility | soluble | |