Sable · Question
What is the difference between P21 and IGF-1 LR3?
P21 is a ciliary neurotrophic factor (CNTF)-derived peptidomimetic with an adamantylglycine, studied in neurogenesis research in rodent models (peptidomimetic, MW about 578.7 g/mol).
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Last verified 2026-10-10
What is the difference between P21 and IGF-1 LR3?
P21 is a ciliary neurotrophic factor (CNTF)-derived peptidomimetic with an adamantylglycine, studied in neurogenesis research in rodent models (peptidomimetic, MW about 578.7 g/mol).
Which is heavier, P21 or IGF-1 LR3?
P21 has a molecular weight of about 578.7 g/mol and IGF-1 LR3 about 9111 g/mol (PubChem), so IGF-1 LR3 is heavier by 8,532.3 g/mol, a ratio of 15.74. This means 1 mg of P21 contains 1,728 nmol versus 109.8 nmol for IGF-1 LR3.
How many mg of IGF-1 LR3 are equimolar to 1 mg of P21?
1 mg of P21 (MW 578.7) is 1,728 nmol. The same number of moles of IGF-1 LR3 (MW 9111) weighs 15.744 mg. Equimolar comparisons matter when testing two compounds side by side in the same assay.
A 0.1 mg vial of IGF-1 LR3 equals how many mg of P21 in moles?
0.1 mg of IGF-1 LR3 (MW 9111) is 0.01098 µmol. The same amount of P21 (MW 578.7) would weigh 0.006352 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A 1 mg vial of IGF-1 LR3 equals how many mg of P21 in moles?
1 mg of IGF-1 LR3 (MW 9111) is 0.1098 µmol. The same amount of P21 (MW 578.7) would weigh 0.06352 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 IGF-1 LR3 in moles?
10 mg of P21 (MW 578.7) is 17.28 µmol. The same amount of IGF-1 LR3 (MW 9111) would weigh 157.4 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 IGF-1 LR3 in moles?
5 mg of P21 (MW 578.7) is 8.64 µmol. The same amount of IGF-1 LR3 (MW 9111) would weigh 78.72 mg. This equimolar conversion lets two compounds be compared at matched molar amounts in the same experiment.
A CoA for every lot; each vial carries a printed lot number that matches it. Ask with the lot number and we send it.
Cite this
Research use only. Not for consumption. No health claims.
Plain
Sable Peptides. (2026). What is the difference between P21 and IGF-1 LR3?. UK Research Peptide Reference. Retrieved 11 October 2026, from https://www.sablepeptides.co.uk/questions/compare/igf-1-lr3-vs-p21/#sqa-041326
APA
Sable Peptides. (2026, October 11). *What is the difference between P21 and IGF-1 LR3?*. UK Research Peptide Reference. https://www.sablepeptides.co.uk/questions/compare/igf-1-lr3-vs-p21/#sqa-041326
BibTeX
@misc{sable_#sqa-041326_2026,
author = {{Sable Peptides}},
title = {{What is the difference between P21 and IGF-1 LR3?}},
year = {2026},
howpublished = {\url{https://www.sablepeptides.co.uk/questions/compare/igf-1-lr3-vs-p21/#sqa-041326}},
note = {Accessed 11 October 2026. CC BY 4.0}
}Badge
<a href="https://www.sablepeptides.co.uk/ref"><img src="https://www.sablepeptides.co.uk/badge/ref.svg" alt="Data: UK Research Peptide Reference — Sable Peptides" width="220" height="40"></a>
Date modified: 2026-10-10