1. What is bilirubin?

Bilirubin, with the cas no.635-65-4 is a serum proteins and related enzymes. Its chemical formular is C₃₃H₃₆N₄O₆ and the molecular weight is 584.73. It shows as a light orange to deep redish-brown product. And the EINECS of it is 211-239-7. Besides, it is a stable and refrigerate material. 3-[2-[[3-(2-carboxyethyl)-4-methyl-5-[(Z)-(4-methyl-5-oxo-3-vinyl-pyrrol-2-ylidene)methyl]-1H-pyrrol-2-yl]methyl]-4-methyl-5-[(Z)-(3-methyl-5-oxo-4-vinyl-pyrrol-2-ylidene)methyl]-1H-pyrrol-3-yl]propanoic acid is the systematic name of it. You can know the bilirubin structure as follows:



2. Bilirubin usage

Generally, bilirubin can be used as the raw material of producing artificial bezoar. Besides, bilirubin is created by the activity of biliverdin reductase on biliverdin, a green tetrapyrrolic bile pigment that is also a product of heme catabolism. It is also responsible for the yellow color of bruises. In addition, it has the function of the effective hydrogen peroxide scavenger and the antioxidant. 

Bilirubin can be callled as "Cholerythrin" in ANHUI BRIGHT-CHEM BIOENGENEERING CO.,LTD is a orange or red brown cystalize powder. The top purity of this chemical in this chemical manufacturer is ≥90% or ≥99%. It can be used as API of artifical bezoar producing. This manufacturer has the GMP certificate of bilirubin. Any others about what is bilirubin, you can send inquiries to them.