TRANSFORMATION OF URONIC ACIDS CATALYSED BY BORON TRIFLUORIDE ETHERATE. SYNTHESIS OF 4-O-ACETYL-1,2-O-ISOPROPYLIDENE-3-O-TOLUENE-P-SULPHONYL-α-D-XYLOPYRANURONO-5,1-LACTONE

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• Xinji City Taida Sinopec Co., Ltd.

  Contact:0086-311-85341278

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• Zhejiang Quzhou Jiancheng Silicone Co., Ltd.(Shanghai Jiancheng Industial and Trade Co, Ltd)

  Contact:18957018777 +86-570-3888777

  Address:The company production base address： Quzhou City, Zhejiang Province high-tech industrial park Nianhua Road 37

• Taizhou Shengxing Chempharm Co.,Ltd

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  Address:Yantou Chemical Zone Jiaojiang Taizhou Zhejiang China

• Kaymossy BioChem Tech Co., Ltd

  website:http://www.kaimosi.com

  Contact:0571-87191913/0571-87199097

  Address:Room 215, Building 3rd, No.288 Ningxia Road, Qingdao city, China

• Xian Changyue Biological Technology Co., Ltd.

  website:https://www.xachangyue.com/

  Contact:+86-029-88211911

  Address:Keji Road NO.70