A research-compound supplier is best evaluated on batch-specific Certificates of Analysis, independent third-party testing, clear identity and purity reporting, and transparent research-use framing. This hub explains the criteria and links to per-compound sourcing guides.
Batch-specific COAs
Each lot should ship with analytical data tied to that exact batch — identity, purity, and the methods used — rather than a generic specification.
Third-party verification
Independent HPLC and mass-spectrometry testing adds confidence beyond a supplier’s own figures. Look for suppliers who publish or provide this.
Identity & purity reporting
Clear reporting of sequence/formula, molecular weight, and HPLC purity percentage lets you confirm the material before any in-vitro work.
Research-use framing
A legitimate research-supply source frames materials for in-vitro laboratory research use only. Per-compound sourcing guides below cover tesamorelin, ipamorelin, T-GLP2 (tirzepatide), oxytocin, and SS-31.
Find a COA: search every third-party lab report by product or batch number in our certificate of analysis library.
Related research guides
- Sourcing tesamorelin
- Sourcing ipamorelin
- Sourcing T-GLP2 (tirzepatide)
- Sourcing oxytocin
- Sourcing SS-31
Research-use note
All materials discussed are supplied for in vitro laboratory research use only, and are not for human or animal use.
Related research: Verify research peptide purity complete guide.








