Insulin Zinc Crystals (Lente Insulin)
Amorphous and crystalline zinc-insulin complex providing intermediate duration. HTS 2937.12.00.00 as insulin derivative; zinc modification doesn't trigger Chapter 29 organo-inorganic heading per notes.
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Alternative Classifications
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Import Tips & Compliance
• Particle size distribution critical for lente formulations; avoid aggregation
• Refrigerated shipping with suspension aids; validate crystal suspension
• Zinc-insulin specificity maintained in 2937.12 despite metal coordination
Related Products under HTS 2937.12.00.00
Human Insulin (rDNA)
Recombinant human insulin produced via DNA technology, a polypeptide hormone used primarily for treating diabetes mellitus. Classified under HTS 2937.12.00.00 as a synthetic reproduction of insulin, the exact structural analogue of natural human insulin. Meets chapter 29 requirements for chemically defined organic compounds used as hormones.
Insulin Lispro (Humalog)
Rapid-acting insulin analogue created by recombinant DNA technology with amino acid modifications for faster absorption. Falls under HTS 2937.12.00.00 as a structural analogue of insulin used primarily as a hormone for glycemic control. Qualifies as a chain-modified polypeptide hormone per chapter notes.
Insulin Glargine (Lantus)
Long-acting basal insulin analogue produced by recombinant DNA, modified for prolonged release profile. HTS 2937.12.00.00 covers this as a derivative and structural analogue of insulin used primarily as a hormone. Chemically defined polypeptide meeting Chapter 29 hormone classification criteria.
Insulin Aspart (NovoRapid)
Fast-acting insulin analogue with aspartic acid substitution, rDNA origin, used for mealtime glycemic control. Classified in 2937.12.00.00 as insulin structural analogue per heading description for chain-modified polypeptides used as hormones.
Insulin Detemir (Levemir)
Soluble long-acting insulin analogue with fatty acid modification for albumin binding. HTS 2937.12.00.00 applies to this rDNA-produced derivative used primarily as a basal insulin hormone replacement.
Insulin Sodium Salt USP
Pharmaceutical grade sodium salt of bovine or porcine insulin meeting USP standards. Explicitly covered by HTS 2937.12.00.00 as 'insulin and its salts' for therapeutic hormone use.