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17-hydroxy-3-oxoestra-5(10),9(11)-diene-17beta-carbonitrile cyclic ethylene acetal

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成都运帷化工有限公司是一家专业从事医药中间体，以及其他化工产品的销售、研发定制和技术服务的科技服务型化工企业。 公司设有营销部，质保部，定制研发部，以及多个战略合作工厂。 我们的服务宗旨： 真诚沟通，用心创造；价值传递，客户为先；品质保证，持续共赢。 Chengdu Uwin Chemical Co., Ltd specializes in producin