1-Hydroxy-N,N-diethyl-3-oxo-1H-indole-2-propanamide from China
An indolic coupler derivative used in photographic color development for fine-grain magenta dyes with controlled solubility. The heterocyclic amide structure ensures compatibility with aqueous processing. Classified under HTS 2933.99.24.00 for photographic use.
Duty Rate — China → United States
19%
Rate breakdown
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Amide-function confirmation per heading provisions; provide solubility parameters; ensure coupler reactivity data for verification