Product Name: CytosineSynonyms: 4-AMINO-2(1H)-PYRIMIDINONECAS Number: 71-30-7Molecular Formula: C4H5N3OMolecular Weight: 111.1Molecular Structure:??Application: Intermediate of LamivudineTest ItemSpecificationDescriptionwhite to almost white crystalline powderResidue on ignition≤0.1%Loss on drying≤0.5%Total impurity≤0.5%Assay98.0%-102.0%http://www.zhejiangyuanjin.com/pharmaceutical-intermediate/lamivudine-intermediate/cytosine-cas-no-71-30-7.html