2CPY X HCL, chloro-pyrimidine, 2-Chloro, 2-chloropyrimide, 2-Chloro-4-deoxyuracil, 2-pyrimidinyl chloride, Pyrimidine, 2-chloro-, 2-chloro-pyrimidin, 2-Cl-pyrimidine, 2-chloro-pyrimidine, 2-pyrimidyl chloride, pyrimidin-2-yl chloride, 2-Chloropyrimindine, PYRIMIDINE,2-CHLORO, 2-choropyrimidine