Does Titan sell Kisspeptin-10?

No — Kisspeptin-10 is not a Titan catalog product. Titan's RUO line centers on in-house-tested research peptides such as BPC-157, TB-500, retatrutide, the CJC-1295 + Ipamorelin blend, and pre-mixed nasal-format peptides. Rather than list an amidated decapeptide it does not verify in-house, Titan points researchers to the compounds it does test and to the COA standard that applies to any research compound, Kisspeptin-10 included.

Why does the C-terminal amide matter so much for Kisspeptin-10?

Kisspeptin-10 is an RF-amide peptide — its C-terminus ends in an amidated arginine-phenylalanine (-NH2) rather than the free carboxyl (-OH) an ordinary synthesis leaves. That amide is the defining structural feature of the molecule, so confirming it is present is a core part of confirming identity. A batch that failed to amidate is the free-acid decapeptide: a different compound about one dalton lighter. This is a verification and identity point, not a claim about any biological effect.

What should a real Kisspeptin-10 COA show?

A credible lot-matched certificate should confirm identity by a high-resolution mass measurement that resolves the correct amidated monoisotopic mass — distinguishing it from the ~1 Da-lighter free acid and from a deamidated asparagine species — ideally supported by MS/MS sequence data. It should resolve purity from an HPLC chromatogram (shown, not just a number) with oxidation- and deamidation-related peaks identified, state net peptide content along with salt form and water content, and carry a lot number matching the code on the unit you receive.

Why can a Kisspeptin-10 batch read as high-purity and still be the wrong molecule?

Because several of the most likely problems shift mass by only about one dalton. If amidation failed, the free acid is roughly 1 Da lighter; if an asparagine deamidated, that residue is roughly 1 Da heavier. On a low-resolution mass spectrometer, or on a certificate that prints only a rounded parent mass, changes that small are easy to miss — so a 'high purity, identity confirmed' badge can sit on top of a free-acid or deamidated species. A high number is not the same as a resolved high-resolution mass plus a chromatogram, which is why the method and the evidence matter more than the percentage.

Is Kisspeptin-10 for human use?

No. Anything discussed here is strictly for in-vitro laboratory research. Kisspeptin-10 supplied as a research chemical is not for human or animal consumption, and no reproductive, hormonal, GnRH, LH/FSH, fertility, or any other outcome is claimed for it. Nothing on this page is a dosing schedule or a human-use protocol — it is a sourcing and verification guide only.

Where to buy Kisspeptin-10 · research sourcing & COA

Where to buy Kisspeptin-10 for research — and why the C-terminal amide is the detail that decides it.

Kisspeptin-10 (the C-terminal decapeptide of the KISS1 gene product, also called metastin 45-54, sequence Tyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH2) turns up across the research-supply space wearing the same '≥98% pure, third-party tested' badge as every other listing. What that badge quietly skips is the single feature that makes Kisspeptin-10 what it is: the amide cap on its C-terminus. Kisspeptin-10 belongs to the RF-amide peptide family, and that terminal Arg-Phe-amide (-NH2) is not decoration — it is central to the molecule's identity. A batch that failed to amidate, or one whose amide has hydrolyzed back to the free acid, is a different compound about one dalton lighter, and a mass reading run at low resolution can miss a difference that small. This page is written for researchers sourcing Kisspeptin-10 for laboratory use: what a real lot-matched certificate of analysis should prove, why an amidated peptide with two deamidation-prone asparagines and an oxidation-prone tryptophan needs more than a rounded parent mass, and where Titan's honest catalog fits. It is for in-vitro laboratory and research use only (RUO). No human-use, dosing, reproductive, hormonal, GnRH, LH/FSH, fertility, or any other outcome is claimed anywhere on this page.

See what Titan actually stocks and tests How to verify a COA

Kisspeptin-10 is a C-terminally amidated RF-amide decapeptide

Kisspeptin-10 is Tyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH2 — ten residues ending in an amidated arginine-phenylalanine, the RF-amide motif it shares with the wider RF-amide peptide family. The terminal -NH2 replaces the free -OH carboxyl that an ordinary synthesis would leave behind. That one modification is the defining feature of the molecule, not a footnote, which means the first question when buying Kisspeptin-10 is not 'how pure' but 'did the certificate actually confirm the amide.' A badge copied from a plain, non-amidated peptide is not automatically valid here.

How to read a COA →

Amide vs free acid is a ~1 Da difference a lazy MS misses

The amidated peptide and the free-acid version — the one you get if amidation failed or the amide hydrolyzed — differ by roughly a single dalton (an -NH2 in place of an -OH). On a low-resolution mass spectrometer, or on a certificate that only prints a rounded parent-ion number, a one-dalton shift is easy to overlook, and the free acid can pass as the real thing. Confirming you received the amidated peptide rather than its free-acid impurity takes high-resolution MS that resolves the exact monoisotopic mass, ideally backed by MS/MS. A COA that reports a whole-number mass and calls it 'identity confirmed' has not ruled out the free acid.

Current-lot COA checklist →

Two asparagines add a second ~1 Da trap: deamidation

Kisspeptin-10 carries two asparagine (Asn) residues, and asparagine is prone to deamidation — a common degradation where the side-chain amide converts to a carboxyl, shifting mass by about +1 Da per event. That is the same order of magnitude as the amide-versus-free-acid difference, so on a coarse mass read the two effects can blur together or partly offset, muddying a mass-only identity call. A credible Kisspeptin-10 certificate uses a mass measurement precise enough to separate an intact, correctly amidated peptide from a deamidated or free-acid species, rather than one rounded number that could be several different molecules.

What COA-verified means →

Tryptophan oxidation and a resolved HPLC peak

The tryptophan (Trp) residue in Kisspeptin-10 is oxidation-prone; oxidized tryptophan adds mass and can appear as a shoulder or extra peak on the chromatogram. This is exactly why the HPLC trace itself matters more than the headline percentage: a resolved main peak with the related-substance peaks identified tells a researcher whether an oxidized or deamidated form is riding along with the target. A credible Kisspeptin-10 COA shows the actual chromatogram and the method behind it, not just a purity figure detached from the evidence that produced it.

Supplier checklist →

Net peptide content, not just the label weight

Like any synthetic peptide, Kisspeptin-10 ships as a lyophilized powder that is rarely 100% peptide — residual synthesis salts (trifluoroacetate or acetate), counter-ions, and bound water make up part of the vial weight. A lot that looks clean by chromatogram can still contain meaningfully less actual peptide per milligram than the label implies. A thorough COA states net peptide content, or the salt form and water content used to derive it, so a researcher can reason about what is actually in the vial rather than assuming the printed milligrams are all peptide.

Reconstitution & handling →

What Titan actually stocks (honest)

Titan does not stock Kisspeptin-10. Its RUO catalog is a focused set of in-house-tested research peptides — BPC-157, TB-500, retatrutide, the CJC-1295 + Ipamorelin blend, and a line of pre-mixed nasal-format peptides — not every compound the internet files under 'reproductive-axis' or 'RF-amide research.' Rather than list an amidated decapeptide it does not verify in-house, Titan points researchers to the compounds it does test and releases with lot-matched sheets, and to the verification standard that applies to any research material, Kisspeptin-10 included. The links below cover the honest sourcing context and the in-catalog options.

Best research peptides (in stock) →

The detail, in plain terms

Kisspeptin-10 sourcing, in plain terms.

Kisspeptin-10 is an amidated RF-amide decapeptide (YNWNSFGLRF-NH2). Its C-terminal amide — not a headline purity number — decides whether the certificate in front of you measured the right molecule. Verify that identity was confirmed by a high-resolution mass that distinguishes the amide from the ~1 Da-lighter free acid (and from a deamidated Asn species), and that the HPLC chromatogram resolves oxidation- and deamidation-related peaks; treat a rounded, mass-only 'identity confirmed' as unproven until the evidence backs it.

What it is: Tyr-Asn-Trp-Asn-Ser-Phe-Gly-Leu-Arg-Phe-NH2 (metastin 45-54) — an amidated ten-residue RF-amide peptide.
The defining feature: The C-terminal amide (-NH2). Fail to amidate and you have the free-acid decapeptide, a different molecule.
The ~1 Da catch: Amide vs free acid differ by roughly one dalton — invisible to a low-resolution or rounded mass read.
Second ~1 Da trap: Two asparagines can deamidate (+~1 Da each), blurring a coarse mass-only identity call.
Identity check: High-resolution MS on the monoisotopic mass, ideally with MS/MS; HPLC chromatogram showing resolved related peaks.
Titan stocks: Not a SKU — honest redirect to in-stock, in-house-tested research peptides.

Questions researchers ask

Before you order.

Does Titan sell Kisspeptin-10?: No — Kisspeptin-10 is not a Titan catalog product. Titan's RUO line centers on in-house-tested research peptides such as BPC-157, TB-500, retatrutide, the CJC-1295 + Ipamorelin blend, and pre-mixed nasal-format peptides. Rather than list an amidated decapeptide it does not verify in-house, Titan points researchers to the compounds it does test and to the COA standard that applies to any research compound, Kisspeptin-10 included.
Why does the C-terminal amide matter so much for Kisspeptin-10?: Kisspeptin-10 is an RF-amide peptide — its C-terminus ends in an amidated arginine-phenylalanine (-NH2) rather than the free carboxyl (-OH) an ordinary synthesis leaves. That amide is the defining structural feature of the molecule, so confirming it is present is a core part of confirming identity. A batch that failed to amidate is the free-acid decapeptide: a different compound about one dalton lighter. This is a verification and identity point, not a claim about any biological effect.
What should a real Kisspeptin-10 COA show?: A credible lot-matched certificate should confirm identity by a high-resolution mass measurement that resolves the correct amidated monoisotopic mass — distinguishing it from the ~1 Da-lighter free acid and from a deamidated asparagine species — ideally supported by MS/MS sequence data. It should resolve purity from an HPLC chromatogram (shown, not just a number) with oxidation- and deamidation-related peaks identified, state net peptide content along with salt form and water content, and carry a lot number matching the code on the unit you receive.
Why can a Kisspeptin-10 batch read as high-purity and still be the wrong molecule?: Because several of the most likely problems shift mass by only about one dalton. If amidation failed, the free acid is roughly 1 Da lighter; if an asparagine deamidated, that residue is roughly 1 Da heavier. On a low-resolution mass spectrometer, or on a certificate that prints only a rounded parent mass, changes that small are easy to miss — so a 'high purity, identity confirmed' badge can sit on top of a free-acid or deamidated species. A high number is not the same as a resolved high-resolution mass plus a chromatogram, which is why the method and the evidence matter more than the percentage.
Is Kisspeptin-10 for human use?: No. Anything discussed here is strictly for in-vitro laboratory research. Kisspeptin-10 supplied as a research chemical is not for human or animal consumption, and no reproductive, hormonal, GnRH, LH/FSH, fertility, or any other outcome is claimed for it. Nothing on this page is a dosing schedule or a human-use protocol — it is a sourcing and verification guide only.