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公开(公告)号：US3243438A
公开(公告)日：1966-03-29
申请号：US25815963
申请日：1963-02-13
Applicant: HOFFMANN LA ROCHE
Inventor： JOSEPH HELLERBACH , OTTO SCHNEIDER
IPC: C07D317/58
CPC classification number: C07D317/58
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