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公开(公告)号：BG33282A3
公开(公告)日：1983-01-14
申请号：BG4903580
申请日：1980-09-11
Applicant: BASF AG
IPC: A01N43/58 , A01P13/00 , C07D237/22 , C07D237/10
Abstract: The manufacture of substantially pure 4-amino-5-chloro-1-phenylpyridaz-6-one by reaction of 4,5-dichloro-1-phenylpyridaz-6-one with ammonia in the presence of phenol-4-sulfonic acid.
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