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Ethyl 4-oxo-3,4-dihydro-2H-pyran-2-carboxylate
287193-06-0 AF19448
C8H10O4 170.1626
Ethyl 4-oxo-3,4-dihydro-2H-pyran-2-carboxylate
4-氧代-3,4-二氢-2H-吡喃-2-羧酸乙酯
95