Ethyl 5-amino-4-cyano-3-(2-ethoxy-2-oxoethyl)thiophene-2-carboxylate标准品 上海博湖生物科技有限公司

p1Src=//y2.yzimgs.com/uploads/543184/20211123-134157369.gif?watermark/2/text/5LiK5rW35Y2a5rmW55Sf54mp56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/300/fill/I0E3QTlBOA==/gravity/SouthEast