Hormone and Reproductive Peptides
Reproductive peptides are compounds studied in hormone signaling and reproduction. We carry Kisspeptin-10, PT-141 (bremelanotide), oxytocin and the bioregulator Testagen.

Read more about reproductive peptides
What are reproductive peptides?
Kisspeptin-10 is the ten-residue active end of kisspeptin, which sits near the top of the reproductive hormone axis. PT-141 is a cyclic melanocortin peptide derived from Melanotan 2. Oxytocin is a nine-residue ring-shaped hormone, and in 1953 it became the first polypeptide hormone ever made in a lab. Testagen is a four-residue bioregulator, not a steroid.
All reproductive peptides here are for lab research only.
Reproductive peptides in stock
Hormone-related peptides in sealed vials:
- Oxytocin: a cyclic nine-amino-acid peptide hormone (CAS 50-56-6) supplied as freeze-dried powder
- PT-141: bremelanotide, a cyclic melanocortin peptide (CAS 189691-06-3) supplied as freeze-dried powder
- Kisspeptin-10: a ten-amino-acid fragment of kisspeptin (CAS 374675-21-5) supplied as freeze-dried powder
- Testagen: a synthetic Lys-Glu-Asp-Gly bioregulator tetrapeptide supplied as freeze-dried powder
Handling hormone peptides
Most of these are small and dissolve readily in water. Oxytocin and PT-141 are both cyclic, so they hold up better in solution than linear peptides of the same size. Store everything refrigerated. For background, PubChem has the record for oxytocin.
Storing and handling reproductive peptides
Keep sealed vials in the fridge at 36 to 46 °F (2 to 8 °C) and away from light until you need them. When you reconstitute, let the vial reach room temperature, add the solvent slowly down the inside wall and swirl gently until it’s clear. Don’t shake it. Label each vial with the date you mixed it, and keep mixed vials cold. Each product page lists any compound that needs special handling, such as freezing or DMSO.
Why buy reproductive peptides from Oath Peptides
We ship from Gilbert, Arizona with 2-day shipping. Every batch is tested by a US lab, with purity at 99% or higher, and every vial arrives sealed and labeled with the compound and the amount. Most items come as a single vial or in 3, 6 and 12 packs that save up to 20 percent.
Reproductive peptides FAQ
Is PT-141 the same as bremelanotide?
Yes. Bremelanotide is its generic name.
Is Testagen a hormone?
No. It’s a four-amino-acid peptide with no steroid structure.
Do you sell Melanotan 2, which PT-141 comes from?
Yes. Melanotan 2 is in our skin and tanning peptides range, in 5mg and 10mg vials.
Order reproductive peptides today
Pick a product above, choose your vial size and check out in a couple of minutes. Need something to dissolve it in? Add Research Water to the same order and it ships in the same box.
All products are for laboratory research use only. Not for human or veterinary use.
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