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2921.29.00.55/Spermine Tetrahydrochloride/Japan

Spermine Tetrahydrochloride from Japan

Spermine tetrahydrochloride, a tetraamine salt, classified under HTS 2921.29.00.55 as acyclic polyamine derivative salt for biochemical research.

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%
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Import Tips

• Verify Sigma-Aldrich/USP reference standards matching imported specification

• Document research institution end-user to avoid pharmaceutical classification

• Maintain cold chain documentation (2-8°C storage required)