A facile and practical preparation of 5,7-dihydroxy-3-(4-nitrophenyl)-4H-1-benzopyran-4-one

R&D Labs maybe for 137522-87-3

• Shanghai Sunwise Chemical Co., Ltd

  website:http://www.sunwisechem.com

  Contact:86-021-33883180

  Address:Room 10E, Building G, Westlink Center, No. 2337 Gudai Road, Minhang District, Shanghai, China PC: 201100

• Jiangsu Haian Petro chemical Plant

  Contact:+86-513-88902723

  Address:99, Changjiang West Road, Haian County, Jiangsu

• Beijing Pure Chem Co.,Ltd.

  Contact:+86-10-83993285

  Address:Rm.1708, Haobai Tower, Building 6, No.50, North Road, West Third Ring, Haidian District, Beijing, China

• SJZ THLD IMP & EXP CO LTD

  website:http://www.truewingroup.com

  Contact:86-311-66699812

  Address:NO.600 ZHONGSHAN EAST ROAD SHIJIAZHUANG

• Hebei Lead Bio-Chemicals Co., Ltd.

  website:http://www.ldbiochem.com

  Contact:+86-311-87826503

  Address:481, Heping West Road, Shijiazhuang,China