Cyclohexane Bis(Isopropyl Acetyl) 99% Pure from Mexico
High-purity 1,1-bis(1-methylethoxy)cyclohexane at 99% used as carbonyl protecting agent in steroid synthesis. Specifically enumerated under HTS 2911.00.10.00 within acetals and hemiacetals subchapter. Essential for selective organic transformations in fine chemical manufacturing.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Use stainless steel drums with nitrogen blanketing; acetals are moisture-sensitive and hydrolyze during transit
• Pre-clear with FDA if ultimate use is pharmaceutical intermediate (even if not final drug)
• Document synthesis route to prove compliance with Chapter 29 purity requirements vs
• Chapter 38 preparations