3-Amino-3-methyl-1-butyne Pharmaceutical Grade from Japan
High-purity 3-Amino-3-methyl-1-butyne meeting pharmaceutical standards, explicitly covered under HTS 2921.19.31.00 as a named acyclic monoamine. Used in synthesis of antiviral drugs and as a building block for alkyne-containing therapeutics. Purity >99% distinguishes it for regulated import.
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 GMP or USP certificate to support pharma end-use and prevent scrutiny under general chemical headings
• Label with exact CAS number and batch purity to match HTS specific naming requirements
• Pre-register under TSCA if new importer; pharma intermediates often trigger EPA review