Thiophenol
Thiophenol is an organosulfur compound with formula C6H5SH, a colorless liquid with strong odor used in organic synthesis and as a precursor for pharmaceuticals. Classified under HTS 2930.90.92.51 as an other organo-sulfur compound where sulfur is directly bonded to carbon. It serves as a reagent for thioether formation and radical reactions.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If aromatic and specifically enumerated
Certain aromatic organo-sulfur compounds have specific subheadings before 'other'.
If mixed with >2% other substances
Mixtures not qualifying as Chapter 29 per notes may fall to chemical preparations.
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Import Tips & Compliance
• Include odor-masking agent documentation to comply with note 2(g) identification provisions
• Verify not sulfonated derivative; pure thiols stay in 2930, sulfonated go to 2904-2920
Related Products under HTS 2930.90.92.51
Methanesulfonyl Chloride
Methanesulfonyl chloride (MsCl) is a colorless liquid organo-sulfur compound used as a reagent in organic synthesis for converting alcohols to mesylates. It falls under HTS 2930.90.92.51 as an organo-sulfur compound containing sulfur directly linked to carbon, classified as 'other' within heading 2930. This compound is essential for sulfonation reactions in pharmaceutical and fine chemical production.
Ethyl Methanethiosulfonate
Ethyl methanethiosulfonate is a synthetic organo-sulfur reagent used in protein chemistry for cysteine modification. It qualifies under HTS 2930.90.92.51 as an other organo-sulfur compound with S-C bonds, not covered by specific 2930 subheadings. Primarily employed in biochemical research and proteomics.
Di-tert-butyl Disulfide
Di-tert-butyl disulfide is an organo-sulfur compound used as a polymerization modifier and lubricant additive. Falls under HTS 2930.90.92.51 as other organo-sulfur with S-S and C-S linkages. Provides steric protection in synthetic applications.
S-Phenyl Thioacetate
S-Phenyl thioacetate serves as a protected thiol equivalent in organic synthesis, releasing thiophenol under specific conditions. Under HTS 2930.90.92.51 as other organo-sulfur with S-C and C=O functions. Used in peptide and natural product synthesis.
Methyl 3-Mercaptopropionate
Methyl 3-mercaptopropionate is an organo-thiol ester used in polymer synthesis and flavor chemistry. HTS 2930.90.92.51 classification as other organo-sulfur compound with primary thiol functionality. Intermediate for methionine production.
Bis(2-chloroethyl) Sulfide
Bis(2-chloroethyl) sulfide, known as mustard gas precursor, is a toxic organo-sulfur compound with military history. Strictly controlled under HTS 2930.90.92.51 as other organo-sulfur. Used legitimately in pharmaceutical synthesis under license.