Phenanthridine from Germany
Phenanthridine, a linear tricyclic nitrogen heterocycle used in nucleic acid staining and synthesis. HTS 2933.99.9701 covers this as other nitrogen heterocycles; distinguished from quinoline by fusion pattern.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• HPLC isomer separation proof; angular isomers may go to different subheading
• Biohazard labeling for DNA intercalator properties
• Research chemical imports need end-user certificates