1,3,3-Trimethyl-2-Methyleneindoline from Canada
1,3,3-Trimethyl-2-methyleneindoline is an indoline derivative explicitly listed under HTS 2933.99.08.00 as an aromatic heterocyclic compound with nitrogen hetero-atoms. It serves as a key intermediate in the production of photochromic dyes and optical brighteners. The compound's methylene group enables specific reactivity in dye synthesis.
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
• Provide NMR or HPLC analysis confirming structure matches exact HTS specification
• Register under TSCA if new to US inventory; include PMN status if applicable
• Watch for reclassification as indoline base (2933.99.97) if purity questioned