15.
    发明专利
    未知

    公开(公告)号:DE58903876D1

    公开(公告)日:1993-04-29

    申请号:DE58903876

    申请日:1989-10-12

    Applicant: BASF AG

    Abstract: Riboflavin-4',5'-cyclophosphoric acid chloride of the formula I (I) its preparation by reacting an alkali metal salt of riboflavin, in an aprotic solvent, with phosphorus oxychloride, its use for the preparation of riboflavin-5'-phosphate and of the sodium salt of riboflavin-5'-phosphate, and a process for the preparation of riboflavin-5'-phosphate or its sodium salt via the novel phosphoric acid ester chloride.

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