Contains Processed zona pellucida sperm-binding protein 4;Zona pellucida sperm-binding protein 4;Zona pellucida sperm-binding protein B;ZPB;ZINPYR-4;ZP4;9-(o-Carboxyphenyl)-2-chloro-5-[2-{bis(2-pyridylmethyl)aminomethyl}-N-methylaniline]-6-hydroxy-3-xanthanone, ZP4;9-(2-Carboxyphenyl)-2-chloro-5-[{2-(di(2-pyridyl)aminomethyl)phenyl}aminomethyl]-6-hydroxy-3-xanthanoneZinpyr-4