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1,7-二甲基黄嘌呤
agric.
paraxanthine
(C₇H₈O₂N₄)
3, 7-二甲基黄嘌呤
genet.
theobromine
3,7-二甲基黄嘌呤
agric.
theobromine
(C₇H₈N₄O₂)
7二甲基黄嘌呤
pharm.
theobromine
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