ARA-290, also called cibinetide, is a small peptide of eleven building blocks. It is modeled on one short stretch — a single helical segment — of the much larger erythropoietin protein.
Vestrand supplies a single reference lot, prepared for independent testing; the certificate posts to the verification page the moment the analysis is signed off.
The distinctive detail sits at the very start of the chain: its first building block is a 'capped' form, a cyclized version of a common amino acid. That cap is why the peptide cannot be written in the simplest letter shorthand, and why its identity is recorded in a fuller annotated form. All of its building blocks are the ordinary natural kind otherwise.
For laboratory research use only. Not for human or veterinary use.