Bilirubin is extracted from bile of animals. It is very effective on relieving convulsion ,allaying a fever ,detoxifcation ,decreasing blood pressure and promoting number of eosinophils in the blood . It is the basis of Calculus Bovis Ariifactus and it also used to make cosmetics , medicine , health products etc . Our bilirubin has past thin layer chromatography and liquid chromatography test by Hubei Entry & Exit Inspection and Quarantine Bureau Technology Centre . We can produce 40~50Kg bilirubin every month , its purity is more than 95% ,and the structural stability is well, the purity don’ t reduce in more than one years . Registry number 635-65-4 Molecular Formula C33H36N4O6 Molecular weight 584.67204 Keyword 211-239-7 Assay 93% ~ 98.9% Appearance Orange to reddish-brown fine crystalline powder Solution(0.01 % in chloroform) Yellow, clear Loss on Drying(two hours at 60 °C, vacuum) Max. 1.8 % Azobilirubin Absorptivity Min. 0.500 Bicarbonate Extractables Max. 0.230 Calcium Content < 600 ppm