2-Pyrazoline-1-carboxamidine, 3-methyl-5-oxo-4-(phenylazo)-, hydrochloride 3-Methyl-5-oxo-4-(phenylazo)-2-pyrazoline-1-carboxamidine hydrochloride 3656-18-6 4-Phenyl-azo-3-methyl-pyrazolon-(5)-yl-amidin hydrochlorid [German] F 2349