U.S. Customs and Border Protection · CROSS Database · 1 HTS code referenced
Primary HTS Code
2930.90.4920
$64.8M monthly imports
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Ruling Age
25 years
Data compiled from CBP CROSS Rulings, Census Bureau Trade Data · As of 2026-04-29 · Updates monthly
The tariff classification of N-Acetyl-L-Cysteine (CAS 616-91-1) from Spain.
NY G86727 February 6, 2001 CLA-2-29:RR:NC:2:239 G86727 CATEGORY: Classification TARIFF NO.: 2930.90.4920 Ms. Lisa M. Conzo Interchem Corporation 120 Route 17 North P.O. Box 1579 Paramus, NJ 07653-1579 RE: The tariff classification of N-Acetyl-L-Cysteine (CAS 616-91-1) from Spain. Dear Ms. Conzo: In your letter dated January 18, 2001, you requested a tariff classification ruling for N-Acetyl-L-Cysteine which you have stated is used as a mucolytic. The applicable subheading will be 2930.90.4920, Harmonized Tariff Schedule of the United States (HTS), which provides for organo-sulfur compounds: other. Pursuant to General Note 13 to the Tariff Schedule of the United States, this product is free of duty. This ruling is being issued under the provisions of Part 177 of the Customs Regulations (19 C.F.R. 177). A copy of the ruling or the control number indicated above should be provided with the entry documents filed at the time this merchandise is imported. If you have any questions regarding the ruling, contact National Import Specialist Andrew Stone at 212-637-7063. Sincerely, Robert B. Swierupski Director, National Commodity Specialist Division