Construction of pyrimido[5,4-e]-as-triazine, purine, v-triazolo-[4,5-d]pyrimidine and pyrazolo[3,4-d]pyrimidine ring systems from 5-arylazo-6-arylidenehydrazino-1,3-dimethyluracils

R&D Labs maybe for 78158-81-3

• Junkai (Tianjin) Chemical Co., Ltd.

  website:http://www.junkaichem.com

  Contact:86-22-85689515

  Address:Room 8-501, Building K2, The Hi-Tech Green Industrial Base, No.6, 6th Road, Hi-Tech Development Road, Tianjin Hi-Tech IndustrialPark, Tianjin, China.

• HOST COUNTRY LIMITED

  Contact:+852 83038667

  Address:Room 1502, 15th Floor, SPA Centre,53-55 Lockhart Road, Wanchai, Hong Kong

• Shanghai Yurui Biotechnology(Anyang) Pharmaceutical Co., Ltd

  Contact:+86-0372-3662335 +86-0372-3661988

  Address:hanling industrial park anyang

• Huixian Tiankai Paper Making Agent CO.,Ltd.

  Contact:+86-373-6899808

  Address:Mengdian Industrial Avenue,Huixian,Xinxiang,Henan,China

• WANGWEIPING(expird)

  Contact:0086 16537861366

  Address:building 17, shibei district Qingdao, shandong china