For research use only. We do not sell to patients.
Ionizable lipids / A28-C6B2
A28-C6B2 chemical structure
Product imageResearch use only
CAT. NO. DC67450Featured

A28-C6B2

Ionizable lipid for LNP and nucleic-acid delivery research.

Pack size & price

USD
TotalUS$600
We match the best price and quality on market.
Ships from ShanghaiIce-pack transportPure lipid recommended
Product overview

Description & Application

A28-C6B2 is a biodegradable ionizable lipid specifically engineered for spleen-targeted delivery. Through its unique branched structure, it bypasses hepatic uptake to achieve highly efficient transfection of F4/80+ macrophages and CD11c+ dendritic cells within the spleen. This lipid remains neutral in the bloodstream to minimize non-specific interactions, while undergoing protonation in the acidic environment of the endosome to facilitate nucleic acid release, thereby significantly enhancing the potency of mRNA vaccines and immunotherapies.

CAS No.Not available
Chemical NameA28-C6B2
SynonymsA28C6B2， A28 C6B2
SMILESCCCCCCC(COC(CCCCCN(CCCCCC(OCC(CCCC)CCCCCC)=O)CCCCCO)=O)CCCC
FormulaC41H81NO5
M.Wt668.1
PurityELSD-HPLC>95%
StoragePure form: −20 °C, 1 year; In solvent: −80 °C, 6 months; −20 °C, 1 month. Sealed and protected from light.
Shipping conditionShips from Shanghai. Pure lipid is stable during ice-pack transport.
PublicationRen, Y., Zeng, L., Tang, Y., et al. Enhancing spleen-targeted mRNA delivery with branched biodegradable tails in lipid nanoparticles. J. Mater. Chem. B.
Laboratory planning

Solution Calculators

The product molecular weight is prefilled when available and remains editable. Confirm solvent compatibility and solubility before preparation.

Mass = concentration × volume × molecular weight
Enter any three values to calculate the fourth.
C₁V₁ = C₂V₂
Enter any three values to calculate the fourth.
Preparing stock solutions

Quick preparation table

Solvent volumes update from the molecular weight above.

Mass1 mM5 mM10 mM
10 mg14.9678 mL2.9936 mL1.4968 mL
25 mg37.4195 mL7.4839 mL3.7420 mL
50 mg74.8391 mL14.9678 mL7.4839 mL
100 mg149.6782 mL29.9356 mL14.9678 mL
250 mg374.1955 mL74.8391 mL37.4195 mL

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Contact our team with the catalog number and requested quantity.

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Handling guidance

Shipping, storage and sampling

How is the lipid shipped, and how should I store it?
We generally ship the neat (undissolved) lipid compound rather than an ethanol solution. The neat lipid is stable during transport with ice packs, and shipments originate from Shanghai. Pure form: store at −20 °C for up to 1 year. In solvent: store at −80 °C for up to 6 months or at −20 °C for up to 1 month. Keep sealed and protected from light. Avoid repeated thaw cycles for best results.
Pure lipid or solution — which should I choose?
Pure lipid is generally more stable during shipping and storage, so we usually recommend the pure form. A solution in ethanol or chloroform can be supplied when required by your workflow. Tell us the intended application, solvent and target concentration so the most suitable format can be confirmed.
How should I measure a small amount of oily or viscous lipid?
Ionizable lipids are often oily liquids or viscous semisolids, so material can be lost during repeated weighing or transfer. For a small pack, dissolve the entire quantity and aliquot it volumetrically. For example, add 1 mL ethanol to 25 mg lipid to prepare a 25 mg/mL stock, then use a pipette to withdraw the required amount. For quantities above 100 mg, direct weighing with an analytical balance may be more practical. Always confirm solvent compatibility and solubility first.
Can you support formulation optimization and scale-up?
Yes. Share the RNA cargo, target tissue, administration route, formulation method and assay plan. Our team can discuss starting molar ratios, N/P ratio and scale-up requirements for research workflows.