CAS No. 138831-86-4

Batch: Purity:99.49
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Ovalbumin (257-264) chicken Chemical Structure
Chemical Structure
Check the Ovalbumin (257-264) chicken product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name (2S)-2-[[(2S)-6-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S,3S)-2-[[(2S,3S)-2-[[(2S)-2-amino-3-hydroxypropanoyl]amino]-3-methylpentanoyl]amino]-3-methylpentanoyl]amino]-4-oxobutanoyl]amino]-3-phenylpropanoyl]amino]-4-carboxybutanoyl]amino]hexanoyl]amino]-4-methylpentanoic acid
CAS Number 138831-86-4
Molecular Formula

C45H74N10O13
Molecular Weight (MW) 963.13
InChIKey JVJGCCBAOOWGEO-RUTPOYCXSA-N

Ordering Information

Biological Activity

Ovalbumin (257-264) is an antigenic peptide epitope corresponding to residues 257–264 of chicken ovalbumin. It functions as a major histocompatibility complex (MHC) class I (H-2Kb)-restricted antigen that binds to H-2Kb molecules and triggers specific CD8+ cytotoxic T cell activation. Antigen presentation of this epitope stimulates T cell receptor signaling, inducing T-cell-mediated immune responses and cytokine secretion in immunological studies.[1][2]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 100 mg/mL (103.82 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 2 mg/mL
Ethanol Insoluble
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

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Note: Technical data last updated: Sep 1, 2026.