Unoprostone Isopropyl from Japan
Unoprostone isopropyl, a docosanoid prostaglandin F2α isomer, treats glaucoma. Classified under HTS 2937.50.00.00 as prostaglandin ester structural analogue per Chapter 29 ester rules. Longer chain maintains hormonal classification.
Duty Rate — Japan → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Document 22-carbon chain distinguishing from C20 prostaglandins
• Isopropyl ester follows parent acid classification per Chapter Note
• Primarily Japanese market; ensure ICH Q1A stability equivalence