3,4-二甲氧基-3-环丁烯-1,2-二酮, 98% 上海康朗生物科技有限公司

p1Src=//y2.yzimgs.com/uploads/495139/20161219-154412391.jpg?watermark/2/text/5LiK5rW35bq35pyX55Sf54mp56eR5oqA5pyJ6ZmQ5YWs5Y-4/font/5a6L5L2T/fontsize/300/fill/I0E3QTlBOA==/gravity/SouthEast