γ-Butyrolactone USP Grade from Japan
USP-grade γ-Butyrolactone is a high-purity lactone meeting pharmaceutical standards, classified as a heterocyclic oxygen-only compound under HTS 2932.20.50.10 per Chapter 29 definitions. Primarily used as an intermediate for synthesizing GABA-related drugs.
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
• Provide USP certificate of analysis for FDA compliance; ensure List I chemical reporting to DEA; avoid water-dissolved forms unless per Chapter Note (d)