Probenecid USP
Probenecid is an organo-sulfur compound functioning as a uricosuric agent to treat gout by inhibiting uric acid reabsorption. Its sulfanyl-containing structure links sulfur directly to carbon, fitting Chapter 29 heading 2930 for organo-sulfur compounds. Falls under the 'drugs' subheading 2930.90.92.35 due to its pharmaceutical application.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If not certified primarily for human drug use
Without drug-specific documentation, classified as other non-drug organo-sulfur compounds.
If when mixed with antibiotics as combination bulk drug
Bulk medicaments containing penicillins fall under Chapter 30 mixtures.
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Import Tips & Compliance
• Include pharmacopeial compliance certificates and stability data as FDA requires for API imports
• Declare exact CAS number (57-68-1) and purity to match HTS drug specification and avoid general chemical classification
• Watch for common pitfall of mislabeling as veterinary use, which could shift to different regulations
Related Products under HTS 2930.90.92.35
Sulfasalazine USP
Sulfasalazine is a synthetic organo-sulfur compound used primarily as an anti-inflammatory drug for treating ulcerative colitis and rheumatoid arthritis. It features a sulfonamide group directly linked to carbon atoms, qualifying it as an organo-sulfur compound under heading 2930. Classified specifically under 2930.90.92.35 as a pharmaceutical drug.
Dapsone USP
Dapsone is an organo-sulfur antibacterial drug used for leprosy and dermatitis herpetiformis treatment. Its diphenylsulfone structure features sulfur directly linked to aromatic carbons, characteristic of heading 2930 organo-sulfur compounds. Designated as a drug in subheading 2930.90.92.35.
Mesna USP
Mesna is an organo-sulfur compound used as a cytoprotective agent during chemotherapy to prevent hemorrhagic cystitis. Its mercaptoethane sulfonate structure has sulfur directly linked to carbon atoms per heading 2930 definition. Classified as a pharmaceutical drug in 2930.90.92.35.
Tiobutramine (active pharmaceutical ingredient)
Tiobutramine is an organo-sulfur veterinary drug intermediate with thio-butyl side chain for animal health applications. Sulfur-carbon direct linkage qualifies it under heading 2930 organo-sulfur compounds. Falls in drug subheading 2930.90.92.35 despite veterinary focus.
Methimazole USP
Methimazole is an organo-sulfur antithyroid drug containing thiazole ring with direct S-C bonds, used for hyperthyroidism. As an organo-sulfur heterocyclic compound, it properly falls under heading 2930. Specified in the pharmaceutical drugs subheading 2930.90.92.35.
Sulfadiazine Sodium
Sulfadiazine sodium is the sodium salt of an organo-sulfur sulfonamide antibiotic used for toxoplasmosis and burns. As per Chapter 29 notes, inorganic salts of organic compounds classify with the organic base, retaining its 2930 organo-sulfur status. Included as a drug under 2930.90.92.35.