Cyclohexylisatin from Mexico
Cyclohexylisatin is an N-cyclohexyl substituted isatin derivative with imide functionality, used in medicinal chemistry research. Classifies under HTS 2925.19.91.00 as a substituted imide not specifically excluded.
Duty Rate — Mexico → United States
13.7%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Laboratory/research designation reduces scrutiny; include institutional end-user letter
• CAS 27662-64-4 verification essential; generic 'isatin derivative' rejected
• Small package (<100g) preferred for research chemicals