6877-17-4;AC1LWA2Q;4-{[5-(3,4-dimethoxyphenyl)-4-oxothieno[2,3-d]pyrimidin-3(4H)-yl]acetyl}-1-methylpiperazin-1-ium;5-(3,4-dimethoxyphenyl)-3-[2-(4-methylpiperazin-4-ium-1-yl)-2-oxoethyl]thieno[2,3-d]pyrimidin-4-one
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