Anastrozole powder (crystals) or Arimidex powder is not a steroid, but it is used during very high androgenic steroids such as Dianabol and testosterone where estrogen levels need to be watched because of gynecomastia and water retention purposes. Because the primary male hormone, even testosterone, will convert to the primary female hormone.
You will find Arimidex in two commonly available forms, simple tablets or in a liquid solution you could simply drink.
Profile of anastrozole powder
Anastrozole Arimidex Powder
CAS ID: 120511-73-1
Assay: 99.80% HPLC
Melting point: 81.2~82.9°C
Appearance: white crystalline powder.