title: Enzymatic and chemical preparation of 5-amino-4-chloro-2-(2,3-dihydroxyphen-1-yl)-3(2H)-pyridazinone.
mesh_terms: D002396:Catechols / Q000096:biosynthesis; D002850:Chromatography, Gel; D002942:Circular Dichroism; D005069:Evaluation Studies as Topic; D006863:Hydrogen-Ion Concentration; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008722:Methods; D011724:Pyridazines / Q000096:biosynthesis / Q000138:chemical synthesis*; D013056:Spectrophotometry, Ultraviolet
chemical_list: D002396:Catechols; D011724:Pyridazines