- Pyrimidine series
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1BP0101193-21-11193-21-1
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2BP011156-83-2156-83-2
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3BP0121193-24-41193-24-4
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4BP0133977-29-53977-29-5
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5BP014626-48-2626-48-2
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6BP015611-08-5611-08-5