For research use only. We do not sell to patients.
Ionizable lipids / AA3-DLin
AA3-DLin chemical structure
Product imageResearch use only
CAT. NO. DC82101Featured

AA3-DLin

Ionizable lipid for LNP and nucleic-acid delivery research.

Pack size & price

USD
TotalUS$400
We match the best price and quality on market.
Ships from ShanghaiIce-pack transportPure lipid recommended
Product overview

Description & Application

AA3-DLin is an ionizable cationic amino lipid (pKa = 5.8) that has been used in combination with other lipids in the formation of lipid nanoparticles (LNPs) for the delivery of mRNA.LNPs containing AA3-DLin and encapsulating mRNA for the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) spike glycoprotein induce immunogenicity in mice.

CAS No.Not available
Chemical NameAA3-DLin
Synonymspiperazine-1,4-diylbis(ethane-2,1-diyl) (9Z,9'Z,12Z,12'Z)-bis(octadeca-9,12-dienoate);AA3DLin, AA3 DLin
SMILESO=C(CCCCCCC/C=C\C/C=C\CCCCC)OCCN1CCN(CCOC(CCCCCCC/C=C\C/C=C\CCCCC)=O)CC1
FormulaC44H78N2O4
M.Wt699.1
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.
Publication1. Li, Z., Zhang, X.-Q., Ho, W., et al. Enzyme-catalyzed one-step synthesis of ionizable cationic lipids for lipid nanoparticle-based mRNA COVID-19 vaccines. ACS Nano 16(11), 18936–18950 (2022).
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 mg14.3041 mL2.8608 mL1.4304 mL
25 mg35.7603 mL7.1521 mL3.5760 mL
50 mg71.5205 mL14.3041 mL7.1521 mL
100 mg143.0411 mL28.6082 mL14.3041 mL
250 mg357.6026 mL71.5205 mL35.7603 mL

Need a different pack size or technical document?

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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.