Sable · Question

What is the difference between KPV and P21?

KPV is the C-terminal tripeptide of alpha-melanocyte-stimulating hormone, studied in inflammation-signalling research in cell and rodent models (peptide, MW about 342.43 g/mol).

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Last verified 2026-10-10

What is the difference between KPV and P21?

KPV is the C-terminal tripeptide of alpha-melanocyte-stimulating hormone, studied in inflammation-signalling research in cell and rodent models (peptide, MW about 342.43 g/mol).

Which is heavier, KPV or P21?

KPV has a molecular weight of about 342.43 g/mol and P21 about 578.7 g/mol (PubChem), so P21 is heavier by 236.3 g/mol, a ratio of 1.69. This means 1 mg of KPV contains 2,920.3 nmol versus 1,728 nmol for P21.

How many mg of P21 are equimolar to 1 mg of KPV?

1 mg of KPV (MW 342.43) is 2,920.3 nmol. The same number of moles of P21 (MW 578.7) weighs 1.69 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.

Compare the molecular formulas of KPV and P21

PubChem lists KPV as C16H30N4O4 (342.43 g/mol) and P21 as C27H42N6O8 (578.7 g/mol). KPV is a peptide; P21 is a peptidomimetic. These formulas refer to the parent compounds without salt counter-ions.

A 2 mg vial of KPV equals how many mg of P21 in moles?

2 mg of KPV (MW 342.43) is 5.841 µmol. The same amount of P21 (MW 578.7) would weigh 3.38 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

A 5 mg vial of KPV equals how many mg of P21 in moles?

5 mg of KPV (MW 342.43) is 14.602 µmol. The same amount of P21 (MW 578.7) would weigh 8.45 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

A 10 mg vial of KPV equals how many mg of P21 in moles?

10 mg of KPV (MW 342.43) is 29.203 µmol. The same amount of P21 (MW 578.7) would weigh 16.9 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

A 20 mg vial of KPV equals how many mg of P21 in moles?

20 mg of KPV (MW 342.43) is 58.406 µmol. The same amount of P21 (MW 578.7) would weigh 33.8 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

A 10 mg vial of P21 equals how many mg of KPV in moles?

10 mg of P21 (MW 578.7) is 17.28 µmol. The same amount of KPV (MW 342.43) would weigh 5.917 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

A 5 mg vial of P21 equals how many mg of KPV in moles?

5 mg of P21 (MW 578.7) is 8.64 µmol. The same amount of KPV (MW 342.43) would weigh 2.959 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.

Cite this

Research use only. Not for consumption. No health claims.

Plain

Sable Peptides. (2026). What is the difference between KPV and P21?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/kpv-vs-p21/#sqa-039728

APA

Sable Peptides. (2026, October 11). *What is the difference between KPV and P21?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/kpv-vs-p21/#sqa-039728

BibTeX

@misc{sable_#sqa-039728_2026,
  author = {{Sable Peptides}},
  title = {{What is the difference between KPV and P21?}},
  year = {2026},
  howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/kpv-vs-p21/#sqa-039728}},
  note = {Accessed 11 October 2026. CC BY 4.0}
}

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Date modified: 2026-10-10