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US 5,512,571 AGranted
(-) 4-(1,4,5,6-tetrahydro-4-methyl-6-oxo-3-pyridazinyl)phenyl!-hydra-zono! propanedinitrile
AssigneeOrion-yhtyma Oy
InventorsPentti Nore, Erkki Honkanen, Reijo Backstrom, Tom Wikberg, Heimo Haikala, Jorma Haarala
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Abstract
Diastereomeric intermediate salts of formulae (IIIa) or (IIIb) ##STR1## are prepared.
Claims1
Diastereomeric intermediate salts of formulae (IIIa) or (IIIb) ##STR5##
Dependencies are inferred from the claim text.