HGH 191AA (Somatropin) Research Protein
Somatropin is recombinant human growth hormone: the 191-amino-acid, 22 kDa protein with the same sequence as the main pituitary form, quantified in IU.
5 listed HGH 191AA (Somatropin) presentations
Each presentation is a separate specification with its own product code. Open one to add it to your inquiry cart or to ask for a quote on WhatsApp. Pricing, availability and lot documents are confirmed for each order.
| Presentation | Per vial | Per box | Product code |
|---|---|---|---|
| HGH 191AA (Somatropin) 10 IU → | 10 IU | 10 vials | H10 |
| HGH 191AA (Somatropin) 12 IU → | 12 IU | 10 vials | H12 |
| HGH 191AA (Somatropin) 15 IU → | 15 IU | 10 vials | H15 |
| HGH 191AA (Somatropin) 24 IU → | 24 IU | 10 vials | H24 |
| HGH 191AA (Somatropin) 36 IU → | 36 IU | 10 vials | H36 |
Amounts are per vial. mg, IU and mL describe different quantities and are not interchangeable. For laboratory research use only.
About HGH 191AA (Somatropin)
Human growth hormone is a single-chain protein of 191 amino acids with two disulfide bonds and a mass of about 22 kDa. “191AA” in the listing name signals that the material matches this full natural sequence, as opposed to older methionyl-GH or other variants.
Recombinant somatropin is produced in expression systems such as E. coli. Its quantity is conventionally expressed in international units (IU) of biological activity; for somatropin, about 3 IU corresponds to 1 mg of protein.
Research context
Somatropin is used in research on growth hormone receptor signaling through JAK2–STAT5, hepatic IGF-1 production and growth hormone effects on metabolism in cell and animal models, and as a reference protein in growth hormone assays.
HGH 191AA (Somatropin) is also the active ingredient of licensed pharmaceutical products in some markets. The material listed here is supplied for laboratory research only; it is not a pharmaceutical product and must not be used as one.
What to confirm for HGH 191AA (Somatropin)
Check these points with our team before you order:
- The IU strength per vial and the IU-to-mg conversion stated on the lot documents.
- For the 24 IU presentation, the unit itself: the supplier sheet states 24 mg, and the catalog follows the IU unit used for every other HGH listing.
- The expression system and identity documentation for the recombinant protein.
- Protein-specific storage conditions.
- The number of boxes you need and the US delivery destination.
- Which lot documents you require before ordering, such as an identity or purity report.
HGH 191AA (Somatropin): frequently asked questions
Why is HGH listed in IU rather than mg?
Growth hormone has traditionally been quantified in international units of biological activity. The conventional conversion for somatropin is about 3 IU per mg, but the lot documents should state the value used.
What does 191AA mean?
It indicates the full 191-amino-acid sequence of the main natural form of human growth hormone.
Which HGH 191AA (Somatropin) presentations are listed?
5 presentations are listed: 10 IU (H10), 12 IU (H12), 15 IU (H15), 24 IU (H24), 36 IU (H36). Each is packed 10 vials per box, and every presentation has its own specification page and product code.
How do I request a quote for HGH 191AA (Somatropin)?
Open the presentation you need and use Ask price to message PureForm Biosciences on WhatsApp, or add several materials to the inquiry cart and send them together. Pricing, current availability and lot documents are confirmed in that conversation.
Related research materials
- IGF-1 LR3 →Long R3 IGF-1, an 83-amino-acid analogue with reduced IGFBP binding.
- HGH Fragment 176-191 →C-terminal fragment of human growth hormone, residues 176–191.
- CJC-1295 →Tetrasubstituted GHRH(1-29) analogue, listed with and without DAC.
- Tesamorelin →Stabilized full-length GHRH(1-44) analogue.
- MK-677 (Ibutamoren) →Non-peptide spiroindoline agonist of the ghrelin receptor.
- AOD9604 →Modified C-terminal fragment of human growth hormone (hGH 177–191).
Research Use Only. HGH 191AA (Somatropin) is supplied strictly for laboratory research. It is not a drug, supplement or medical product and is not for human or veterinary consumption.