The reddish-brown crystalline chloride of heme,C34H32N4O4FeCl,produced when hemoglobin reacts with glacial acetic acid and sodium chloride in a laboratory test for the presence of blood.

• 氯高铁血红素一种红褐色的血红素晶体氯化物C34H32N4O4FeCl，生成于实验室现血实验时血红蛋白和冰状醋酸及氯化纳的相互反应。