(R)-Phenylglycine Free Acid from Canada
The free acid form of D-phenylglycine, a critical chirality center for beta-lactam synthesis. HTS 2922.49.0500 explicitly names this aromatic α-amino acid. Supplied as white crystalline powder with high enantiomeric excess.
Duty Rate — Canada → United States
10%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Chiral HPLC certificate mandatory showing ee >99%
• Microbial limits testing required for pharma intermediate qualification
• Store below 25°C; validate polymorphic form stability