Chapter 2937 — Customs Tariff Headings

2937.2Steroidal hormones, their derivatives and structural analogues:

2937.50.00Prostaglandins, thromboxanes and leukotrienes, their derivatives and structural analogues

2937.90.00Other

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Products classified under Tariff item 29.37

Human Growth Hormone Reference Standard USP

Human Growth Hormone Reference Standard USP is a highly purified recombinant somatotropin preparation used exclusively for quality control, assay calibration, and standardization in pharmaceutical manufacturing. It meets United States Pharmacopeia specifications for identity, purity, and potency, and is imported in small quantities for laboratory use. As a chemically defined polypeptide hormone, it falls squarely under tariff item 2937.11.00.

Pegylated Somatotropin (PEG-GH)

Pegylated Somatotropin (PEG-GH) is human somatotropin conjugated with polyethylene glycol (PEG) to extend its half-life and reduce injection frequency. This structural modification creates a derivative of somatotropin used primarily for its hormonal effect in growth hormone therapy. The PEGylation does not alter the core hormonal function, making it classifiable under somatotropin derivatives.

Recombinant Human Growth Hormone (Somatropin)

Recombinant Human Growth Hormone (Somatropin) is a recombinant DNA-derived version of human somatotropin, identical in structure to the natural pituitary hormone. It is used primarily to treat growth hormone deficiency in children and adults. As a chemically defined polypeptide hormone, it is directly classifiable under tariff item 2937.11.00.

Somatotropin Lyophilized Powder for Injection

Somatotropin Lyophilized Powder for Injection is a freeze-dried form of recombinant human somatotropin for reconstitution prior to injection. It is used in growth hormone replacement therapy and maintains the structural integrity of the polypeptide hormone. The lyophilized presentation does not change the product's classification under somatotropin.

Somatrem (Methionyl Human Growth Hormone)

Somatrem (Methionyl Human Growth Hormone) is a structurally modified form of human somatotropin with an extra methionine residue at the N-terminus. This modification makes it a derivative of somatotropin used for growth hormone replacement therapy. The analogue maintains the biological activity of the natural hormone and is classifiable under somatotropin derivatives.

Somatrogon (Long-Acting Growth Hormone)

Somatrogon (Long-Acting Growth Hormone) is a structural analogue of somatotropin created by linking human growth hormone to a CTP (C-terminal peptide) sequence from the hCG beta subunit. This modification extends its half-life for weekly dosing. As a structural analogue used primarily for its hormonal effect, it is classifiable under somatotropin derivatives.

Bovine Insulin Crystals

Bovine insulin crystals are a highly purified, crystalline form of insulin derived from bovine pancreas. As a natural polypeptide hormone, it falls under tariff item 2937.12.00, which covers insulin and its salts, including natural or synthetic reproductions.

Human Insulin (rDNA)

Recombinant human insulin produced via DNA technology is a synthetic reproduction of the natural hormone, structurally identical to human insulin. It is classified under tariff item 2937.12.00 as insulin, regardless of its method of production.

Insulin Aspart (NovoRapid)

Insulin aspart is a rapid-acting insulin analogue produced by recombinant DNA technology, with a single amino acid substitution compared to human insulin. As a structural analogue of insulin used primarily for its hormonal effect, it is classified under tariff item 2937.12.00.

Insulin Degludec API

Insulin degludec is an ultra-long-acting insulin analogue with a side-chain modification that promotes multi-hexamer formation. As a chain-modified polypeptide hormone used primarily as insulin, it is classified under tariff item 2937.12.00.

Insulin Detemir (Levemir)

Insulin detemir is a soluble long-acting insulin analogue with a fatty acid modification that enables albumin binding. As a derivative of insulin used primarily as a basal hormone replacement, it is classified under tariff item 2937.12.00.

Insulin Glargine (Lantus)

Insulin glargine is a long-acting basal insulin analogue produced by recombinant DNA technology, modified for a prolonged release profile. As a derivative and structural analogue of insulin used primarily as a hormone, it is classified under tariff item 2937.12.00.

Insulin Glulisine (Apidra)

Insulin glulisine is an ultra-rapid-acting insulin analogue with glycine and lysine modifications at the B-chain. As a recombinant DNA-produced structural analogue used primarily as a polypeptide hormone, it is classified under tariff item 2937.12.00.

Insulin Lispro (Humalog)

Insulin lispro is a rapid-acting insulin analogue created by recombinant DNA technology with amino acid modifications for faster absorption. As a structural analogue of insulin used primarily as a hormone, it is classified under tariff item 2937.12.00.

Insulin Sodium Salt USP

Insulin sodium salt is a pharmaceutical-grade sodium salt of bovine or porcine insulin meeting USP standards. As a salt of insulin, it is explicitly covered by tariff item 2937.12.00, which includes insulin and its salts.

Insulin Zinc Crystals (Lente Insulin)

Insulin zinc crystals are amorphous and crystalline zinc-insulin complexes providing intermediate duration of action. As an insulin derivative, the zinc modification does not trigger classification as an organo-inorganic compound, so it falls under tariff item 2937.12.00.

Mixed Insulin 70/30 (70% NPH/30% Regular)

Mixed insulin 70/30 is a biphasic mixture of intermediate and short-acting insulin components. As a mixture of insulin derivatives, it is classified under tariff item 2937.12.00, with classification determined by the last heading in numerical order per Chapter 29 Note 3.

Neutral Protamine Hagedorn (NPH) Insulin

Neutral Protamine Hagedorn (NPH) insulin is an isophane insulin suspension complexed with protamine for intermediate action. Despite the protamine addition, it is classified as an insulin derivative under tariff item 2937.12.00 due to the hormone heading's specificity.

Porcine Insulin Zinc Suspension

Porcine insulin zinc suspension is a zinc suspension of porcine-derived insulin for extended action. While it contains zinc, it is classified under tariff item 2937.12.00 as an insulin salt or derivative, not as an organo-inorganic compound of heading 29.31.

Recombinant Insulin API Powder

Recombinant insulin API powder is a bulk active pharmaceutical ingredient of human insulin produced by recombinant E. coli or yeast. As a pure synthetic insulin substance before formulation, it is classified under tariff item 2937.12.00.

Regular Human Insulin 100 IU/mL Solution

Regular human insulin 100 IU/mL solution is a sterile aqueous solution of recombinant human insulin at U-100 strength. As a pure hormone dissolved in water, it falls under tariff item 2937.12.00 per Chapter 29 Note 1(d) for water-dissolved compounds.

Desmopressin Acetate

Desmopressin acetate is a synthetic structural analogue of vasopressin, a polypeptide hormone. It is used primarily for its hormonal effects in treating diabetes insipidus and nocturnal enuresis. This tariff item covers polypeptide hormones and their derivatives and structural analogues used primarily as hormones.

Enfuvirtide (Synthetic Peptide Hormone Analogue)

Enfuvirtide is a synthetic polypeptide that acts as an HIV entry inhibitor. Although it has antiviral activity, its structure is that of a polypeptide hormone analogue. This tariff item covers polypeptide hormones and their derivatives and structural analogues used primarily as hormones.

Glucagon (Recombinant)

Glucagon, including recombinant forms, is a polypeptide hormone used primarily to treat severe hypoglycemia. It is reproduced by synthesis or biotechnology and is used for its hormonal effect. This tariff item covers polypeptide hormones and their derivatives and structural analogues used primarily as hormones.

Pramlintide Acetate

Pramlintide acetate is a synthetic analogue of amylin, a polypeptide hormone co-secreted with insulin. It is used primarily as a hormone adjunct in diabetes treatment. This tariff item covers polypeptide hormones and their derivatives and structural analogues used primarily as hormones.

Recombinant Human Growth Hormone (Somatropin)

Recombinant human growth hormone (somatropin) is a protein hormone structurally identical to the natural hormone. It is used primarily to treat growth disorders. This tariff item covers polypeptide hormones, protein hormones, and their derivatives and structural analogues used primarily as hormones.

Recombinant Human Insulin (Bulk)

Recombinant human insulin in bulk is a protein hormone produced via biotechnology. It is used primarily for diabetes management. This tariff item covers polypeptide hormones, protein hormones, and their derivatives and structural analogues used primarily as hormones.

Secretin (Synthetic)

Secretin, including synthetic forms, is a gastrointestinal polypeptide hormone used diagnostically. It is used primarily for its hormonal effects. This tariff item covers polypeptide hormones and their derivatives and structural analogues used primarily as hormones.

Synthetic Calcitonin Salmon

Synthetic calcitonin salmon is a polypeptide hormone reproduced by synthesis. It is used primarily for treating osteoporosis and hypercalcemia. This tariff item covers polypeptide hormones and their derivatives and structural analogues used primarily as hormones.

Synthetic Oxytocin

Synthetic oxytocin is a polypeptide hormone reproduced by synthesis. It is used primarily for its hormonal effects in inducing labor and controlling bleeding after childbirth. This tariff item covers polypeptide hormones and their derivatives and structural analogues used primarily as hormones.

Teriparatide (PTH 1-34)

Teriparatide is a synthetic polypeptide fragment of parathyroid hormone. It is used primarily for treating osteoporosis. This tariff item covers polypeptide hormones and their derivatives and structural analogues used primarily as hormones.

Cortisone Acetate Micronized Powder

Cortisone acetate micronized powder is a synthetic ester derivative of cortisone, a steroidal hormone. It is used primarily as a glucocorticoid in the manufacture of injectable suspensions. Under the Customs Tariff, esters of acid-function organic compounds are classified with the parent compound, cortisone, which is specifically enumerated in this tariff item.

Cortisone Acetate Powder

Cortisone acetate powder is a synthetic ester derivative of cortisone, a steroidal hormone. It is used primarily as a glucocorticoid for anti-inflammatory treatments. Under Chapter 29 ester classification rules, it is classified with the parent compound cortisone, which is specifically named in this tariff item.

Cortisone Hemisuccinate Sodium Salt

Cortisone hemisuccinate sodium salt is a water-soluble salt of a cortisone derivative, used primarily in injectable formulations. Per Chapter 29 notes, inorganic salts of organic compounds are classified with the parent organic compound. The parent compound, cortisone, is specifically named in this tariff item.

Cortisone USP Grade Crystals

Cortisone USP grade crystals are chemically defined cortisone, a steroidal hormone. They are used primarily for their glucocorticoid effects in compounding pharmacies and drug manufacturing. This tariff item specifically names cortisone, making this product classifiable here.

Hydrocortisone Acetate Micronized Powder

Hydrocortisone acetate micronized powder for veterinary use, a derivative of hydrocortisone used as a steroidal hormone in animal anti-inflammatory therapy. As a chemically defined organic compound, it falls under Chapter 29 and the tariff item for hydrocortisone derivatives.

Hydrocortisone API Micronized

Hydrocortisone API micronized is a chemically defined steroidal hormone, specifically named in this tariff item as hydrocortisone. It is used primarily as an active pharmaceutical ingredient in inhalation and injection formulations. The micronized form does not change its classification.

Hydrocortisone Base Pharmaceutical Grade

Hydrocortisone base pharmaceutical grade is a high-purity, chemically defined steroidal hormone. It is specifically named in this tariff item as hydrocortisone. It is used primarily for adrenal replacement therapy and as an intermediate in the synthesis of hormone derivatives.

Hydrocortisone EP Grade Powder

Hydrocortisone EP grade powder is a chemically defined steroidal hormone, specifically named in this tariff item as hydrocortisone. It is used primarily as a hormone therapy in pharmaceutical manufacturing. The European Pharmacopoeia grade ensures high purity for international supply chains.

Hydrocortisone Powder USP

Hydrocortisone powder in pharmaceutical grade, a synthetic corticosteroid used primarily for its hormonal anti-inflammatory and immunosuppressive effects. It is a separate chemically defined organic compound, meeting the criteria of Chapter 29 Note 1(a), and is classified under the tariff item for hydrocortisone.

Hydrocortisone Sodium Succinate Sterile

Hydrocortisone sodium succinate sterile is an inorganic salt of hydrocortisone, a steroidal hormone. It is used primarily for its anti-inflammatory and immunosuppressive effects in emergency intravenous formulations. Per Chapter 29 notes, inorganic salts of organic compounds are classified with the parent organic compound, hydrocortisone, which is listed in this tariff item.

Hydrocortisone USP Powder

Hydrocortisone USP powder is a pharmaceutical-grade, chemically defined steroidal hormone. It is used primarily for its anti-inflammatory and immunosuppressive effects in various medicinal formulations. This tariff item specifically names hydrocortisone, making this product classifiable here.

Pharmaceutical Cortisone Base API

Pharmaceutical cortisone base API is a chemically defined steroidal hormone, specifically named in this tariff item as cortisone. It is synthesized for use as an active pharmaceutical ingredient in corticosteroid medications. It is used primarily for adrenal replacement therapy and anti-inflammatory effects.

Pharmaceutical Prednisone Base EP Grade

Prednisone base meeting European Pharmacopoeia standards, a synthetic corticosteroid used primarily as a hormone for therapeutic replacement and immunosuppression. It is a separate chemically defined organic compound, classified under the tariff item for prednisone.

Prednisolone Acetate Micronized

Micronized prednisolone acetate, an ester derivative of prednisolone used primarily for injectable and ophthalmic suspensions due to its glucocorticoid hormone activity. As an ester of an organic compound, it is classified with the parent prednisolone under Chapter 29 Note 5(A).

Prednisolone Base EP Grade

Prednisolone base of European Pharmacopoeia grade, a high-purity steroid hormone for global pharmaceutical manufacturing. It is a separate chemically defined organic compound, classified under the tariff item for prednisolone.

Prednisolone Base Pharmaceutical Grade

Prednisolone base pharmaceutical grade is a high-purity, chemically defined steroidal hormone. It is specifically enumerated in this tariff item as prednisolone (dehydrohydrocortisone). It is used primarily as an intermediate in the synthesis of ophthalmic and oral steroid medications.

Prednisolone Hemisuccinate

Prednisolone hemisuccinate, a succinic acid ester derivative providing water-solubility for IV administration as a potent glucocorticoid. As an ester of prednisolone, it is classified with the parent compound under Chapter 29 Note 5(A).

Prednisolone Hemisuccinate Pharmaceutical

Prednisolone hemisuccinate pharmaceutical is an ester derivative of prednisolone, a steroidal hormone. It is used in prodrug formulations for sustained release of the active hormone. Per Chapter 29 ester classification rules, it is classified with the parent compound prednisolone, which is named in this tariff item.

Prednisolone Sodium Phosphate

Prednisolone sodium phosphate, a water-soluble phosphate salt of prednisolone used in oral solutions and eye drops for rapid glucocorticoid absorption. As an inorganic salt of an organic hormone, it is classified with the parent compound under Chapter 29 Note 5(C)(1).

Prednisolone Sodium Phosphate API

Prednisolone sodium phosphate, a phosphorylated derivative of prednisolone used primarily as a steroidal hormone in ophthalmic and oral solutions. As an inorganic salt of an organic hormone, it is classified with the parent compound under Chapter 29 Note 5(C)(1).

Prednisolone USP Powder

Prednisolone powder meeting USP standards, a synthetic glucocorticoid steroid used primarily as a hormone for its anti-inflammatory and immunosuppressive effects. As a separate chemically defined organic compound, it is classified under the tariff item for prednisolone.

Prednisone Hemisuccinate Sodium Salt

Prednisone hemisuccinate sodium salt, a water-soluble derivative of prednisone used primarily as a hormone in injectable formulations. It is a salt of an organic compound, classified with the parent prednisone under Chapter 29 Note 5(C)(1).

Prednisone Micronized API

Prednisone micronized API is a chemically defined steroidal hormone, specifically named in this tariff item as prednisone (dehydrocortisone). It is used primarily as an active pharmaceutical ingredient in tablet and injection formulations for its anti-inflammatory effects. The micronized form does not alter its classification.

Prednisone Micronized Powder

Micronized prednisone powder with reduced particle size for improved bioavailability in inhalation and topical formulations. The physical form modification does not change its chemical identity as prednisone, so it remains classified under the tariff item for prednisone.

Prednisone Sodium Phosphate API

Prednisone sodium phosphate API is an inorganic salt of prednisone, a steroidal hormone. It is used primarily in nasal spray and injection formulations for its glucocorticoid activity. Per Chapter 29 notes, inorganic salts of organic compounds are classified with the parent compound, prednisone, which is named in this tariff item.

Prednisone USP Powder

Prednisone powder meeting USP standards, a synthetic corticosteroid used primarily as a hormone for treating inflammation and autoimmune conditions. As a separate chemically defined organic compound, it is classified under the tariff item for prednisone.

Sterile Hydrocortisone for Injection

Sterile lyophilized hydrocortisone for injection, a bulk hormone powder not yet in dosage form. It is a chemically defined organic compound, and the sterile form does not alter its classification under the tariff item for hydrocortisone.