2930.90.49.50/Methanethiosulfonic Acid S-Methyl Ester/Germany

Methanethiosulfonic Acid S-Methyl Ester from Germany

Methanethiosulfonic acid S-methyl ester is an organo-sulfur compound featuring a thioester functional group where sulfur is directly linked to carbon. Classified under HTS 2930.90.4950 as 'other' organo-sulfur acids, it falls within Chapter 29's scope for separate chemically defined organic compounds containing sulfur directly bonded to carbon. Primarily used as a reagent in organic synthesis and protein modification research.

Duty Rate — Germany → United States

4.2%

Rate breakdown

9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter

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Import Tips

• Provide detailed chemical purity certificates (≥98%) and CAS number (2940-92-1) documentation to verify classification as chemically defined compound

• Ensure SDS includes sulfur-carbon bonding confirmation to distinguish from sulfonated derivatives excluded from heading 2930

• Declare exact concentration if diluted in solvents; solutions solely for transport qualify under Chapter 29 note (e)