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Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
Products classified 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.
Tributylphosphine Sulfide
Tributylphosphine sulfide is an organo-sulfur-phosphorus compound used as a ligand precursor and polymer stabilizer. Classifies under HTS 2930.90.92.51 as other organo-sulfur with P-S-C connectivity. Stable white solid for catalysis applications.
4-Mercaptophenol
4-Mercaptophenol is an aromatic organo-thiol used in polymer synthesis and as a corrosion inhibitor. HTS 2930.90.92.51 as other organo-sulfur compound combining phenolic and thiol functions. Off-white solid with dual reactivity.
Dimethyl Sulfide
Dimethyl sulfide (DMS) is a volatile organo-sulfur compound used as an intermediate in pesticide synthesis and flavor extraction. Classified HTS 2930.90.92.51 as other organo-sulfur thioether. Extracted from natural sources or synthesized.
Sulfuryl Chloride
Sulfuryl chloride (SO2Cl2) is a colorless liquid used for chlorosulfonation and as a chlorinating agent. HTS 2930.90.92.51 as other organo-sulfur compound despite multiple S-Cl bonds. Reactive intermediate for sulfonyl chlorides.
Methanthiol Sodium Salt
Sodium methanethiolate is the sodium salt of methanethiol used as a nucleophile in organic synthesis. Classifies under HTS 2930.90.92.51 per note 2(C)(1) with the parent organic compound. 35% solution in water or dry powder form.
Allyl Methyl Sulfide
Allyl methyl sulfide is a naturally occurring organo-sulfur compound from garlic responsible for flavor and aroma. HTS 2930.90.92.51 as other thioether for food and flavor applications. Colorless liquid with characteristic odor.
Diphenyl Sulfone
Diphenyl sulfone (DPS) is a high-temperature solvent and polymer intermediate used in polysulfone production. HTS 2930.90.92.51 classification as other organo-sulfur sulfone. White crystalline solid with 250°C+ stability.
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.
2,2'-Dithiobis(benzothiazole)
2,2'-Dithiobis(benzothiazole) (DMBTZ) is an organo-sulfur accelerator used in rubber vulcanization. Classified in HTS 2930.90.92.51 as other organo-sulfur compound with direct C-S bonds. Critical for tire and rubber goods manufacturing.