Viomycin Sulfate from Mexico
Viomycin sulfate, a natural tuberculostatic antibiotic from Streptomyces puniceus, used in multi-drug resistant TB treatment. HTS 2941.90.10.50 applies to this unnamed natural antibiotic as a chemically defined compound meeting chapter inclusion criteria. Typically imported in bulk for pharmaceutical research and compounding.
Duty Rate — Mexico → United States
0%
Rate breakdown
9903.05.860%Universal product exemption (U.S. note 52(b))
Import Tips
• Include fermentation batch records proving Streptomyces origin; synthetic routes prohibited
• Test for characteristic peptide structure to distinguish from chemically similar synthetics
• May require DEA scheduling docs if used in controlled research applications