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![4-(5-Ethoxy-2,8-dimethyl-1,4-dihydro-[1,6]naphthyridin-4-yl)-3-methoxybenzonitrile](/upload/image/thumb/2_600_600_2025031850254b20-d005-4e16-a229-2138330b797f1.png)
Isosorbide,≥98% Chinese medicine analytical control
