SYNTHETHIC INVESTIGATIONS ON THE CHEMISTRY OF POLYENE COMPOUNDS. LVI. SYNTHESIS OF (ALL-E)-9-(4-METHOXY-2,3,6-TRIMETHYLPHENYL)-3,7-DIMETHYLNONA-2,4,6,8-TETRAENOIC ACID

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• Tianjin Crest Pharmaceutical R&D Co., Ltd. （Tianjin Yao Technology Development Co., Ltd.）(expird)

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• Ji'nan Orgachem Pharmaceutical Co.,Ltd

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• Anhui New Star Pharmaceutical Development Co., Ltd

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• Beyond Pharmaceutical Co., Ltd

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• Sanming Coffer Fine Chemical Industrial Co., Ltd

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  Address:Jin-sha Yuan Chuang-ye Park,Hi-Tech Development Zone,Sanming City P.R.China