Synthesis of optically active natural carotenoids and structurally related compounds. VIII. Synthesis of (3S,3'S)-7,8,7',8'-tetrahydroastaxanthin and (3S,3'S)-7,8-didehydroastaxanthin (asterinic acid)

R&D Labs maybe for 76705-61-8

• Weifang Dongxing Chitosan Factory

  website:http://dxchitosan.lookchem.com/

  Contact:13475651157

  Address:Weifang city ,shandong province

• Hubei Danao Pharmaceutical Co.,Ltd.

  website:http://www.danaopharm.com

  Contact:+86-719-5251167

  Address:Fandan Road,Danjiangkou,Hubei

• Daqing E-shine Chemical Co.,LTD

  Contact:0086-024-31285112

  Address:Hongweiyuan area, Ranghulu district

• HANGZHOU TOYOND BIOTECH CO., LTD

  Contact:+86-571-86965177

  Address:No. 189, Fengqi East Road, Hangzhou, China

• Ji'nan Orgachem Pharmaceutical Co.,Ltd

  Contact:+86-531-82687810

  Address:Jinan