When sourcing this compound, buyers should demand a Certificate of Analysis (COA) for every batch. Key metrics include melting point (typically 143-145°C for the hydrochloride form), moisture content (<0.5%), and heavy metal limits. It is essential to verify the CAS number (102-97-6) to ensure the correct isomer is being procured. Furthermore, professional suppliers on Made-in-China.com should provide HPLC (High-Performance Liquid Chromatography) or NMR (Nuclear Magnetic Resonance) test reports to validate the chemical's integrity.