HS Code 29.37 – Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones.

HS code 2937 is a 4-digit heading in the Harmonized System that covers: Hormones, prostaglandins, thromboxanes and leukotrienes, natural or reproduced by synthesis; derivatives and structural analogues thereof, including chain modified polypeptides, used primarily as hormones.. HS Code 2937 covers hormones, prostaglandins, thromboxanes, and leukotrienes, whether natural or reproduced by synthesis, along with their derivatives and structural analogues, including chain-modified polypeptides, used primarily as hormones. This heading is critical for the pharmaceutical and biotechnological industries, encompassing potent biological regulators essential for medicinal treatments, research, and veterinary applications. The scope is defined by the primary use as a hormone or related compound, irrespective of whether it's a naturally extracted substance or a synthetic analogue. This includes complex polypeptide hormones like insulin and growth hormone, as well as steroid hormones like testosterone and estrogen. The classification here is paramount for trade compliance due to the high potency, strict regulatory controls, and often high value of these substances. Their trade is heavily scrutinized by health authorities globally, requiring specific permits, adherence to Good Manufacturing Practices (GMP), and rigorous quality control. This heading falls under Chapter 29, emphasizing their identity as specific, complex organic chemical compounds rather than finished pharmaceutical products, although their ultimate destination is often for drug formulation. The advancement of biotechnology has significantly expanded the range of synthetic and recombinant hormones traded under this code.

Insulin (synthetic), Human Growth Hormone (Somatropin), Testosterone, Estradiol, Progesterone, Cortisone, Adrenaline (Epinephrine), Thyroxine, Oxytocin, Melatonin, Prostaglandin E2, Leuprolide, Desmopressin, Glucagon, Calcitonin, Prednisolone, Dexamethasone, Gonadorelin, Triptorelin, Follicle-stimulating hormone (FSH), Luteinizing hormone (LH), Atosiban, Somatostatin, Methandrostenolone

Misclassification often arises when distinguishing between bulk hormones (2937) and prepared pharmaceutical dosage forms (Chapter 30). If hormones are compounded into tablets, injections, or other measured doses for therapeutic or prophylactic use, they are classified under Chapter 30 (e.g., 3004). Another common error is confusing hormones with enzymes (Chapter 35), which are also biological macromolecules but function as catalysts rather than signaling molecules. Additionally, some complex proteins that are not primarily hormones might be incorrectly placed here; Chapter 35 or other specific protein headings (e.g., 3824) might apply. The crucial factor for 2937 is the substance's primary function as a hormone or related compound.

In 2025, the top exporters of HS code 2937 in UN Comtrade data were Ireland ($59.2B, 66% of world exports), the United States ($19.1B) and Denmark ($3.9B). World exports came to about $89.7B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

In 2025, the top importers of HS code 2937 in UN Comtrade data were the United States ($58.6B, 60% of world imports), Italy ($24.7B) and China ($3.4B). World imports came to about $97.1B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

HS code 2937 is a 4-digit heading under Chapter 29 of the Harmonized System. The first 2 digits (29) identify the chapter, and digits 3-4 (37) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.