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γ-Butyrolactone USP Grade from Mexico

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 — Mexico → United States

13.7%

Rate breakdown

9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico

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)