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1.发明授权Method for the production of 4,4'-dihydroxy-beta-carotene, 4,4'-dihydroxy-15,15'-dehydro-beta-carotene and esters thereof 失效4,4'-二羟基-β-胡萝卜素，4,4'-二羟基-15,15'-脱氢β-胡萝卜素及其酯的制备方法
公开(公告)号：US3004063A
公开(公告)日：1961-10-10
申请号：US78646659
申请日：1959-01-13
Applicant: HOFFMANN LA ROCHE
Inventor： ROLAND ENTSCHEL , PAUL KARRER
CPC classification number: C07C2601/16
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