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Intermediates-For Penicillin & Cephalosporin 7-Amino-3-(1H-imidazo-[1,2-b]pyridazin-4-ium- 1-yl-methyl)-3-cephem-4-carboxylic acid HCl   CAS No.       : [166176-51-8]   Abbr             : 7-AICA   Application : Cefozopran   Spec .           : 96.0%