Cyclohexane Bis(Isopropyl Acetyl) 99% Pure from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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