Research Peptide Comparisons

Every comparison ExoLabz has published is indexed here, grouped by the question an analyst is usually trying to settle: is this the same molecule, how do two related sequences differ in mass, or which receptor does each one act at? The two side-by-side pages add prices and vial choice; the articles go deeper into the chemistry.

Which pages compare vials side by side?

• BPC-157 vs TB-500 — Sets the 15-residue BPC-157 against the seven-residue Ac-LKKTETQ fragment, with the ions a certificate should report, single vials versus the 10mg and 20mg blends, and cost per milligram in CAD.
• Sermorelin vs Tesamorelin vs CJC-1295 — Three GHRH-receptor agonists lined up by sequence, the substitutions behind a 10 g/mol mass gap, charge-state tables, and cost per milligram and per micromole.

Is it the same molecule or only a piece of it?

• Thymosin beta-4 vs the TB-500 fragment — Separates the 43-residue parent protein from the short acetylated fragment sold as TB-500, and explains why a mass near 4,963 on a certificate would mean a different product.
• CJC-1295 with DAC vs without DAC — Shows what the drug affinity complex adds to the 29-residue backbone and why the two forms must not be treated as interchangeable on a label.
• GLOW blend composition analysis — Breaks the 70mg GLOW vial into BPC-157, TB-500 and GHK-Cu and also covers KLOW, which adds KPV; useful for anyone checking a three- or four-component chromatogram. Vials: GLOW 70mg and KLOW 80mg.

How do closely related sequences differ in mass?

• GHRP-2 vs GHRP-6 — Compares two hexapeptide secretagogues residue by residue and shows where their molar masses diverge.
• Hexarelin vs GHRP-6 — A single methyl group on the tryptophan ring is the whole difference; the article explains how that shows up in identity testing.
• Melanotan 1, Melanotan 2 and PT-141 — Linear versus cyclic melanocortin analogs, and the C-terminal change that separates PT-141 from its cyclic relative.

Which receptor or pathway does each one engage?

• GHRH analogs vs growth hormone secretagogues — Splits compounds that act at the GHRH receptor from those that act at GHS-R1a, the distinction behind the CJC-1295 & Ipamorelin pairing.
• Selank and Semax — Two peptides built from endogenous fragments (tuftsin and an ACTH segment) with a shared Pro-Gly-Pro extension, compared by origin and structure.
• MOTS-c and SS-31 — A mitochondria-derived 16-residue peptide set against a synthetic tetrapeptide, contrasted by origin and by the mitochondrial targets described in the in-vitro literature.

What should be checked before any comparison is trusted?

A comparison is only as sound as the identity data behind each vial. ExoLabz products are third-party tested by HPLC with purity testing and are 99%+ purity; certificates are published for some products on the COAs page, and each vial is matched to its certificate by cap and crimp colour. Three short reads help with the numbers: reading a certificate of analysis, net peptide content and comparing prices per milligram.

Prices are in CAD on the Canadian price list, with quantity pricing of up to 25% off at 10+ vials. Orders leave from inside Canada within one business day, and tracked shipping is free over $200 CAD. The full range is in the lab shop.

All ExoLabz peptides are supplied for in-vitro laboratory research only and are not for human or veterinary use.