C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/264.7
C07D 237/22 (2006.01)
Patent
CA 1161842
O.Z. 0050/034048 ABSTRACT OF THE DISCLOSURE: 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 pre- sence of phenol-4-sulfonic acid.
373691
Froehlich Helmut
Richarz Winfried
Schroeder Harald
Basf Aktiengesellschaft
Robic Robic & Associes/associates
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