Omoconazole Pharmaceutical Reference Standard from Japan
Omoconazole, a development-stage imidazole antifungal drug substance under HTS 2933.29.4500, features the unfused imidazole ring characteristic of this tariff provision. Used in clinical trials and analytical reference standards.
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
• Include Investigational New Drug (IND) number and protocol for clinical trial materials
• Reference standard purity >99.5% required; provide HPLC chromatograms with all impurities identified
• Batch analytical comparability data essential between manufacturing sites