Name	Abiraterone
Synonyms	17-(3-Pyridyl)androsta-5,16-dien-3beta-ol
Molecular Formula	C24H31NO
Molecular Weight	349.51
CAS Registry Number	154229-19-3

White or off-white powder

Related substances≤0.5%

Individual impurity≤0.1%

Loss on drying≤1.0%

Residue on ignition≤0.1%

Heavy metals≤10ppm

Particle size d(0.9)≤200μm

Solvents

Acetone≤5000 ppm

Methanol≤3000 ppm

Dichloromethane≤600 ppm

Purity (HPLC)>99.0%

Assay(Anhydrous basis):97-102.0%

Abiraterone is a new type of hormone therapy. It is also called abiraterone acetate, CB7630 or Zytiga. It is used to treat prostate cancer that has spread to other parts of the body.