Lineará
Cart, 0 items
Regenerative & CytoprotectiveOpen access · public

Livagen

Livagen is a synthetic tetrapeptide, H-Lys-Glu-Asp-Ala-OH (single-letter KEDA), of L-lysine, L-glutamic acid, L-aspartic acid and L-alanine from the St.

CAS —Mol. weight 461.47 g/molResearch Use Only · reference
2D structure of Livagen (computed from the verified SMILES)
2D depiction computed with RDKit from the verified SMILES.

Identity & structure

K
E
D
A

Primary sequence · 4 residues.

Livagen — identity and specification
Identity
CAS—
PubChem CID87919683
Also known asLivagen peptide, Lyvagen, Lys-Glu-Asp-Ala, KEDA, KEDA peptide
Research classRegenerative & Cytoprotective
Structure
Molecular formulaC18H31N5O9
InChIKeyIKVDKWACACMDLR-BJDJZHNGSA-N
SequenceLys-Glu-Asp-Ala
Length4 residues
Analytical
Average molecular weight461.47 g/mol
Monoisotopic mass461.2122 Da (computed)

A linear tetrapeptide, H-Lys-Glu-Asp-Ala-OH (single-letter KEDA; spelled lyvagen in older literature), of L-lysine, L-glutamic acid, L-aspartic acid and L-alanine with free termini. Formula C18H31N5O9. Identity is reconciled against PubChem CID 87919683: the stereo-defined InChIKey IKVDKWACACMDLR-BJDJZHNGSA-N derived from the sequence matches the deposited record exactly (molecular formula and full InChIKey), with no unassigned stereocentres. No CAS or UNII is asserted. A computed 3D conformer is held pending the chemist sign-off.

Reference context

Livagen is a synthetic tetrapeptide, H-Lys-Glu-Asp-Ala-OH (single-letter KEDA), of L-lysine, L-glutamic acid, L-aspartic acid and L-alanine from the St. Petersburg (Khavinson) line of short peptide bioregulators (older literature spells it lyvagen). It is listed here strictly as an analytical reference entity — it is not sold, stocked, or certified by Lineará, and has no price or certificate of analysis. The data on this page is characterization only: molecular formula C18H31N5O9 and the values computed from it. No biological activity, mechanism, or use is described or implied.

Listed solely as a characterized analytical reference — no representation is made as to any biological effect. For Research Use Only — not for human or veterinary use.

How Livagen is characterized

Identity rests on the molecular formula and mass. Electrospray mass spectrometry (ESI-MS) measures the mass-to-charge ratio of the intact molecule; the average and monoisotopic masses are computed from the verified formula and cross-check the composition. The residue sequence and the modifications noted above define the structure.

CompositionMolecular formula · 4-residue peptide
MassAverage & monoisotopic · ESI-MS
IdentityCAS · PubChem CID · InChIKey
Computed mass & m/z →How an HPLC trace is read →

Frequently asked questions

What is Livagen?
Livagen is a synthetic tetrapeptide, H-Lys-Glu-Asp-Ala-OH (single-letter KEDA), of L-lysine, L-glutamic acid, L-aspartic acid and L-alanine from the St. Petersburg (Khavinson) line of short peptide bioregulators (older literature spells it lyvagen). It is listed here strictly as an analytical reference entity — it is not sold, stocked, or certified by Lineará, and has no price or certificate of analysis. The data on this page is characterization only: molecular formula C18H31N5O9 and the values computed from it. No biological activity, mechanism, or use is described or implied.
What is the amino-acid sequence of Livagen?
Livagen has the sequence Lys-Glu-Asp-Ala. A linear tetrapeptide, H-Lys-Glu-Asp-Ala-OH (single-letter KEDA; spelled lyvagen in older literature), of L-lysine, L-glutamic acid, L-aspartic acid and L-alanine with free termini. Formula C18H31N5O9. Identity is reconciled against PubChem CID 87919683: the stereo-defined InChIKey IKVDKWACACMDLR-BJDJZHNGSA-N derived from the sequence matches the deposited record exactly (molecular formula and full InChIKey), with no unassigned stereocentres. No CAS or UNII is asserted. A computed 3D conformer is held pending the chemist sign-off.
What is the molecular formula of Livagen?
Livagen has the molecular formula C18H31N5O9, giving an average molecular weight of 461.47 g/mol and a computed monoisotopic mass of 461.2122 Da.
What are the key chemical identifiers for Livagen?
The CAS Registry Number for Livagen is —. Its PubChem CID is 87919683 and its InChIKey is IKVDKWACACMDLR-BJDJZHNGSA-N.
Is Livagen a peptide?
Yes. Livagen is a peptide — a chain of amino-acid residues joined by peptide bonds, 4 residues in length. Its identity is defined by that sequence and its molecular mass.
How is Livagen stored and reconstituted?
As a research material, Livagen is typically handled as a lyophilized (freeze-dried) powder. It is kept desiccated and cold — commonly 2–8 °C for short periods and −20 °C for longer storage — and reconstituted in sterile or bacteriostatic water. This is storage and handling information only, not a use protocol.
Does Lineará sell Livagen?
No. Livagen is listed here only as an analytical reference entity. It is not part of the Lineará formulary, has no price or certificate of analysis, and is not offered for sale.
Is Livagen approved for human use?
No. Livagen is presented strictly as characterization reference data. It is not a drug, is not approved for any human or veterinary use, and must not be administered to humans or animals.

Data, tools & related references

Peptide fundamentals
What are peptides? — peptide bonds, structure & chemistry
→
Peptide chemistry glossary — defined terms
→
Analytical data & tools
Livagen molecular weight, m/z & pI
→
Peptide mass & m/z calculator
→
Open compound dataset (CSV · JSON)
→
Research class
Regenerative & Cytoprotective — research class
→
BPC-157
→
TB-500
→
GHK-Cu
→
KPV
→
Thymosin Alpha-1
→
SS-31
→
ARA-290
→
Larazotide
→
Follistatin-344
→
LL-37
→
Cartalax
→
Bronchogen
→
Prostamax
→
Thymulin
→
ACE-031
→
FOXO4-DRI
→

References

  1. PubChem — compound identity, structure & computed properties (CID 87919683). PubChem →

Research professionals only

Reference data

This monograph is characterization reference data. Lineará does not sell, stock, or certify Livagen.

Browse Regenerative & Cytoprotective researchHow to read a COA
áFor Research Use Only · Not for human or veterinary use · Not for diagnostic or therapeutic use

Your privacy choice. We use strictly-necessary cookies to run the site.

With your permission we also use anonymous analytics to improve it.

Nothing non-essential loads until you choose. See our Cookie Policy.